McGill University Thèses et mémoires publiés en 1966

One of the most important consequences of the technical revolution that has marked our century is the replacement of man- and animal-power by mechanical energy and the resulting trend towards sedentarism in man. [...]  Read more

It is only in the last two decades that the metabolic origin and function of phospholipids have lost some of their mystery. Thudichum (1, 2) reported in the 1880's the occurrence of lipid-associated phosphorus, and later studies only succeeded in establishing the general importance of this class of lipids as constituents of tissues. [...]  Read more

The Churchill Falls are a second Niagara. They are situated in the interior of Labrador, about 200 miles from the nearest point of the open Atlantic coast, and about 225 miles north of the Gulf of St.Lawrence (figure 1-1). [...]  Read more

Many factors are known to influence crop yields. Thus two of the basic plant growth requirements in the environment, namely, light and heat need be available to crop plants in specified quantities and/or qualities for good crop yields. In normal farm practice these two environmental factors are managed by proper cultural practices of the crops concerned. [...]  Read more

It is well established that estrogen activity plays major roles in the physiology of reproduction in the hen. This aspect has been covered in a number of reviews, e.g., Sturkie (1958), Lorenz (1954), Van Tienhoven (1959), Parkes and Marshall (1956). [...]  Read more

In many technological processes applicable to industry, as well as in physical and physico-chemical systems to be found in nature, one encounters frequently situations where transfers of heat and of mass occur simultaneously. [...]  Read more

The word "Pituitary" is derived from the Greek - pituita, meaning mucus or phlegm (1). In Galenic times (131 - 200 A.D.), it was thought that a by-product of animal spirits passed through this small body and filtered down through cribriform plate into the nose. [...]  Read more

In 1891, 7 years before Camillo Golgi discovered his famous apparatus, Ramon y Cajal experienced one of his "most deplorable disappointments". While manipulating heavy metal impregnation techniques, he happened to immerse pieces of rat cerebrum in a potassium bichromate-gold chloride solution, and saw a selective reduction of gold salt in an intracellular apparatus, then unknown. [...]  Read more

The phrase 'the system of the double majority' is a familiar one in Canadian histroriography. Despite this, double majority has never had a single study devoted it. [...]  Read more

The Warsaw Convention of 1929, effective since February 13, 1933 (1), is the most widely accepted treaty on international commercial law. It was in force in eighty-two states as of January 10, 1966. (2) [...]  Read more

The Commonwealth Preferential System is a discriminatory trading arrangement, governing trade among the territories of the British Commonwealth, which favours goods of Commonwealth origin through tariff preferences ( relatively low import duties), and in some cases, quotas and negotiated price schemes. [...]  Read more

The trade of a country is concentrated when the range of commodities which it exchanges or the range of markets within which it conducts its exchanges is very limited. In any study of the structure of a country's trade, it is relevant to know whether that trade is concentrated in either or both ways. [...]  Read more

The planning of this study started with the author's personal observations from available reading material that in industry, some problems appear to be persistent. For instance: (a) rapid market and technological changes constantly tend to render many manufacturing plants economically and technically obsolete. [...]  Read more

An attempt is made to determine whether the interaction of pack ice and ocean waves can be studied usefully in a laboratory model. Ocean waves and ice floes are simulated by waves in a laboratory channel and by thin floating sheets of polyethylene. [...]  Read more

The airspace over the high seas is not a lawless domain. Although the theory of the freedom of the air has been challenged since the beginning of controlled flight, yet 'as regards the air above the high seas, the principle of freedom was never successfully challenged.' [...]  Read more

With the rising importance of iron ore beneficiation, a great deal of research has been conducted over the past few years in order to better understand its flotation characteristics. Although hematite in ore deposits is generally loosely associated with gangue and, therefore, presents a relatively easy liberation problem, its flotation is difficult, since the gangue has flotation properties similar to the hematite. [...]  Read more

Nearly three hundred years ago, the protozoa-both free-living and parasitic were first seen by the father of protozoology, Antony van Leeuwenhoek. Ever sinee various biological studies and experiments have been carried out on this fascinating "little animal." [...]  Read more

The view that cardiac output is the prime determinant of maximal oxygen intake has been discussed in the medical literature for some time (13, 61). The proposition was challenged by subsequent investigators (7, 30, 82) who, in agreement with Bock et al (23), claimed that 'peripheral factors' in terms of local blood flow and various changes at the muscular site were limiting maximal oxygen intake. [...]  Read more

Photochemical transformations have now been known to occur for over half a century since the time when sunlight was first used as a source of irradiation. Many reviews have been published since, covering many aspects of the subject(l-7). [...]  Read more

Characteristic features of the long atmospheric waves are discussed on the basis of spherical harmonic analysis of global weather charts for September 1957. At first, there is a discussion of the Trapezoidal and Simpson's numerical integration rules as applied to the computation of the Spherical harmonic coefficients. [...]  Read more

The work described in this thesis is divided into two parts. Part I is concerned with the volume fraction estimation of phases in metallurgical microstructures. A rapid method of phase analysis, using a modified form of point counting, is described and experiments on various kinds of cast irons are reported. [...]  Read more

A la suite d'une objection que nous avions formulée envers l'Epistola de Tolerantia de Locke, M. le Professeur Raymond Klibansky nous proposa d'écrire une thèse sur Pierre Bayle. [...]  Read more

The independant format ion cross-sections of ^139Ba, ^139ce, ^141La , ^141ce, and ^143ce and the cumulative formation cross-sections of ^139Cs, ^141Ba, and ^143La produced in the fission of natural uranium by protons of energies 20-85 MeV have been measured radiochemically. Excitation functions were constructed and the proton energies at which the excitation functions reach their maxima fall on a smooth curve when plotted against neutron-to-proton ratio of the product. Nuclear charge dispersion curves were constructed at 20, 30, 40, 50, 60, 70, 80, and 85 MeV. The general behaviour is similar to that observed by previous workers. With increasing proton …  Read more

[...] Interest in the lake was stimulated by reports of Baffin Island Eskimos fishing 'giant' cod in the lake. Scientific studies were begun in 1951 when the M.V. 'Calanus' of the Fisheries Research Board of Canada was working in the Frobisher Bay area under the leadership of M.J. Dunbar. A one-day survey revealed a unique ecological situation, and subsequent investigations were made during the summer of 1952 when a two man party was landed there from the M.V. 'Calanus' for 36 days, and during the summers of 1957, 1962, and 1965 when more extensive studies were carried out by I.A. …  Read more

Among the various biological systems regulating the living organism, the endocrine glands have been called upon, more often than others, to provide explanations for various aspects of behavior. The concept that behavior could be influenced by substances endogenous to various tissues and organs, reaches back to primitive times. Long before the beginning of the scientific era, primitive people attempted to give themselves more courage or whatever qualities they felt desirable, or even to cure specific illnesses, by consuming the appropriate parts of the beasts they killed. The "medicine man" bad a whole armamentarium of extracts or powders of various organs …  Read more

The sulphide bearing cordierite - anthophyllite rocks of the Pike Lake region are part of a large northeast trending metasedimentary belt. Within this belt they form a band about three miles long and five hundred feet wide close to its southern border. [...]  Read more

Several techniques were compared for the nutritive evaluation of grazed forage. It was shown that esophageal samples were more representative of the grazing animal's diet than clipped samples. High drying temperature affected the intake values obtained by different indicator methods. Results showed that the chromogen ratio and the lignin ratio methods could give relatively accurate and similar intake values provided the correct MEC combinations for chromogen and VanSoest's procedure for lignin were used. In vitro cellulose digestibility and animal behaviour studies suggested that the NVI computed using the lignin ratio method gave more meaningful results particularly for aftermath forages. In …  Read more

During the period between Slave Emancipation in 1834, and the publication of the Report of the Royal West Indian Cormrission in 1897, important changes took place in the economies of the British West Indian Islands. A predominantly monetary economy replaced the pre-Emancipation system of exchange, in which money had not played a substantial role. The planters continued to barter their production for imports forwarded by English marchants, but after 1834 labour had to be paid for in cash and expressed its consumption demand in monetary form. This labour which was required by the planters was now subject to market supply …  Read more

The literature on insect cuticle is considerable. Wigglesworth (1956) wrote: "The key to much of the physiology of insects is to be found in the nature of their cuticle." We should not be surprised, therefore, that so much information has been gathered on the subject. But this information is manifold. It concerns the morphology, chemistry, formation, permeability and physiology of the insect integument. No elaborate technique, apart from the use of the microscope, was necessary for the study of the external surface of the cuticle. But accumulatuion of information about the way the cuticle was formed and its constituents had …  Read more

Four computer methods of determining frequency response characteristics (magnitude, phase, and delay) of arbitrary linear time-invariant networks are described and compared with respect to computation time, accuracy, and suitability for component deviation studies. The programs, which are written in Fortran IV, are capable of handling networks containing a maximum of40 nodes, 200 passive two-terminal branches, and 50 dependent source elements. [...]  Read more

Each finite group G of elements l,x,y, ... can be partitioned into non-intersecting sets of elements which are conjugate if and only if they belong to the same set. These sets are called the conjugate classes of G, or simply the classes of G. [...]  Read more

Vapour concentrations of methanol and ethanol over benzene solutions, and over saturated solutions of cobalt(II) thiocyanate in alcohol-benzene solutions were 0 measured at 25 c, by gas-chromatography. The activity of the alcohol in each solution was thereby found. [...]  Read more

Studies on chromosomal segregation in higher organisms have established a definite relationship between crossing-over and nondisjunction -- the two appear to be inversely correlated. Most of the experiments performed involve segregation from inversion and translocation heterozygotes. [...]  Read more

Traditional concepts (Bayliss, 1923) concerning the functional organization of the nervous structures controlling the cardio-vascular system, assign to the medulla oblongata a predominant role both in the maintenance of a background neurogenic tone and in the mediation of adaptive and homeostatic responses to changes in sensory input. In this scheme the role of the spinal cord is secondary; the cord's capabilities for maintenance of background tone and for adaptive and homeostatic responses, when its connections with the higher centres are severed, are considered negligible. Instead, the neurones of the vasomotor centre in the brain stem are believed to be the …  Read more

The aim of the present experiments was to determine to what extent and under what conditions inter-lingual interference could be produced in the bilingual version of a color-word task. Chapter II first reviews several theories of the nature of the interference found in the color-word task and then presents a new theoretical formulation, drawing on an information processing model, applicable to the bilingual situation. The problem of bilingual dominance is dealt with and a set of predictions is made for both balanced and dominant bilinguals. The following chapters present the results of several experiments along with an interpretation of the …  Read more

Todd (1) has stated in a review on cancer research that "everything comes back finally to nucleic acids". This aspect of tumour cell metabolism has formed the major part of this thesis. [...]  Read more

Studies were conducted to determine some of the characteristics of the spring rise in faecal shedding of nematode ova by parasitized ewes in the Montreal area. [...]  Read more

Friendly relations between Britain and France are, historically speaking, an innovation of the twentieth century. Even if we ignore the Hundred Years War and Joan of Arc, the modern history of Anglo-French relations in the eighteenth and nineteenth centuries is of a struggle for power which culminated in the Napoleonic Wars, and a bitter colonial rivalry climaxed at Fashoda. The alliance of 1914 failed to reconcile deep diplomatie differences: the French felt the British betrayed them at Versailles and deeply resented Britain's negative attitude towards the French invasion of the Ruhr, and the Anglo-German Naval Agreement of 1935 which, they …  Read more

When research was begun on this thesis, the object was to evaluate the British estimates of German military strength and intentions and then to determine the effect of these estimates on British policy. This has proved impossible largely because of the length of time that would be required to complete the study. As a result, the thesis has been strictly limited to an evaluation of British estimates of German military strength and intentions. Wherever possible, the estimates made by Government officials have been compared and contrasted with those made in Parliament and in the British press. [...]  Read more

There are a number of studies in the literature which indicate that stimulation in infancy can affect activity, emotionality" and learning in the adult rat (Levine, 1962). The effects are highly dependent upon small differences in treatment (Brookshire, et al, 1961), and not all the studies are in agreement, but there are enough positive results to indicate that the phenomenon is a genuine one. [...]  Read more

The purpose of this study is to explore the nature of this element of love or devotional bhakti in Krishnavite worship, and especially as it is expressed in the major Vaishnavite scriptures that deal with Krishna. [...]  Read more

Goring, D. (Supervisor)  Read more

The history of apparent movement begins in the 1820's (Boring, 1942), but its full importance for psychology was not recognized until the publication of Wertheimer's paper, Experimentelle Studien über das Sehen von Bewegung, in 1912 (translated in greater part in Shipley, 1961). Wertheimer saw the significance of the tact that, under certain temporal conditions, the successive presentation of a pair of stationary visual abjects "at a considerable spatial distance from one another," evokes the perception of movement. He called this impression of motion in the spatial interval between the two abjects the phi-phenomenon. [...]  Read more

This study describes several methods used to analyse a changing computer system. The effects of these changes on the operating system and the overall Computing Centre are demonstrated. The results of this analysis have led to some short term improvements and also some projections of future computing power required to cope with an expanding demand in a University environment.  Read more

The problem of limiting a random process is considered. The output autocorrelation function of a smooth limiter is determined as a function of the limiter parameters. A stationary gaussian random process of zero mean and arbitrary autocorrelation function is assumed for the input. The transfer characteristic of the limiter is defined by a translated error function. This definition permits the study of smooth limiting with various degrees of limiting and bias. Solutions that are amenable to numerical computation are obtained for the full wave (odd) and half wave biased error function limiter. [...]  Read more