McGill University Thèses et mémoires publiés en 1949

Since 1942, a series of investigations have been carried out in the Department of Chemistry at McGill University using aluminum hydrosilicates as catalysts in various vapour-phase organic reactions. It was found by a number of workers in this field that Morden bentonite, a clay mined at Morden, Manitoba, is an effective catalyst in a number of reactions; namely, the dealkylation of straight and branched chain hydrocarbons, and the dehydration of alcohols, ketones, and cyclic alcohols. Toluene was obtained in good yields from p-cymene. Ethylbenzene was found to give benzene, toluene, and small amounts of styrene. Butadiene was obtained from butanediol-2,3, …  Read more

Since there is the danger of fall frosts damaging a large part of the tomato crop before it is completely harvested, the fruits may be picked in the mature-green stage when frosts appear imminent, and ripened artificially. In some cases, the tomato plants are set out late in the season so that the vines and fruits are at their prime when frosts are likely to occur. The fruit is then harvested in the mature-green stage, stored for a short period and then ripened. This practice lengthens the period of availability of locally grown fresh tomatoes. Tomatoes for the winter and …  Read more

The polarographlc method of chemical analysis was Introduced by Professor J. Heyrovsky in a series of papers published between 1922 and 1926. The method is based on interpretation of the currentpotential curves obtained when electro-reducible or electro-oxidlzable substances are reduced or oxidized at a dropping mercury electrode. The complete electrolytic cell usually consists of a dropping mercury electrode, an electrolyte and a quiet pool of mercury in the bottom of the cell which acts as the other electrode. [...]  Read more

It is the aim of the historical geographer to recreate the geography of past epochs, and to trace the past relationship between man and his physical environment which has resulted in the present landscape. In the following pages an attempt is made to do this with respect to the St. Maurice Valley. There have been three main types of occupance in the valley since the founding of Three Rivers in 1634. At first the settlements were dependent mainly upon the fur-trade, and upon a few small local industries. This was a long period in the history of the St. Maurice …  Read more

The present investigation is concerned primarily with a detailed faunal study of the Nanaimo series of Upper Cretaceous age along the east coast of Vancouver Island, British Columbia. The underlying purpose is three-fold: (1) to supplement and aid the stratigraphical, structural and economical studies of the group which are being carried on by the Geological Survey of Canada; (2) to so re-describe and re-illustrate the faunas that they might be more readily identifiable in other localities; (3) to fix more precisely than heretofore their stratigraphic and chronologic position. [...]  Read more

The Sherbrooke series was examined in detail in the vicinity of Lake Memphremagog in the Eastern townships of Quebec. More specifically, the area lies within the eastern half of the Memphremagog map-area (Canada Sheet 31 H/1) . This map derives its name from the most priminent topographic feature, namely, Lake Memphremagog, which, running north and south, divides the sheet roughly into east and west halves. The Sherbrooke series occupies a triangular area, with its apex at McGoon Point, bounded on the west by Lake Memphremagog and then on the southeast by a line running from McGoon Point along Fitch Bay, …  Read more

At the Central Laboratory of the Division of Botany and Plant Pathology Ottawa, tests are run throughout the winter on pea seed samples for the presence of pathogenic and non-pathogenic fungi on them. The seed samples are sent in by growers throughout the Ottawa district. Ascochyta spp. and Fusarium spp. are the dominant fungi isolated from pea seed originating in the Ottawa district. As shown by Jones in 1927 there are three Ascochyta fungi which cause disease on peas; Ascochyta pisi Lib., Mycosnhaerella pinodes (Berk, and Blox.) Stone and Ascochyta pinodella Jones. The percentage of seed infected with Ascochyta pisi …  Read more

The study of galactose metabolism in man is important for three reasons: (l) galactose serves, particularly in early life, as an important source of glucose; (2) it is required for the formation of galactolipids, important constituents of the central nervous system; (3) abnormalities of its metabolism are used in the diagnosis of disease. [...]  Read more

In the manner of Segre and Helmholz it has been possible using an expansion in spherical waves and elementary vector analysis methods to derive expressions for the field intensities resulting from electric and magnetic dipole radiation and electric quadrupole radiation in terms of the corresponding moments of the nucleus. These same methods however are not applicable to higher orders of multipole radiation. The form of the vector potential resulting from electric and magnetic 2l-pole radiation has been treated in a paper by Heitler. In this paper he considers the expression for the vector potential resulting from electric dipole radiation and …  Read more

This thesis comprises a group of historical and critical studies of the Canadian nature poetry which appeared in both English and French from the time of Canada’s earliest literary beginnings up to the second decade of the present century. These studies deal in part with the parallels and contrasts to be found in the work of the leading English and French Canadian poets of the period designated. Unless otherwise indicated, the terms “English” and “French” stand throughout for English Canadian and French Canadian. Biographical and bibliographical material is presented more extensively in the case of the French poets since it …  Read more

Schippel, W. (Supervisor)  Read more

The thermal conductivity of gases has been the subject of experimental investigations over a period of several decades (54). The thermal conductivity (hereafter simply referred to as the "conductivity"), being, from a physical point of view, one of the basic properties of a gas, much of the classical kinetic theory was concerned with its interpretation. Its measurement was to examine the validity of the theory. The limits of this validity were similar to those imposed on the theory by other gaseous properities, which lead to the concept of the "ideal gas". As to the conductivity, the behaviour of the majority …  Read more

The purpose of this study is to show not only how export credit insurance schemes may offset the credit risks of the individual exporter and promote a revival of trade, but, also, in what manner such schemes under government sponsorship may become concealed political mechanisms that distort the pattern of trade to serve nationalistic ends. Various schemes of export credit insurance, both private and governmental, are examined and compared in order to establish some common identities of purpose, organization, and operation. Since the Export Credits Insurance Corporation in Canada has only been in operation three and a half years, it …  Read more

Keirstead, B. (Supervisor)  Read more

The primary purpose of this investigation is to produce a method whereby the cerebral cortex of man may be rendered temporarily nonfunctional in any focal area desired. It is felt that by such a method the effects of removal of an area may be determined in advance, and thus important areas such as hand and speech may be avoided, yet approached more closely with safety than is possible at present. It may also be possible to distinguish the true epileptic focus from a referred or transmitted epileptic pattern. Since such a method would cause temporary arrest of all activity and …  Read more

Because of the polycultural character of Canada, the term "education of the Jews" must not be taken to be the same as "Jewish education". While the former denotes the kind and amount of educationJews get as citizens of a secular state, the latter is used here to describe the education they receive as members of a national - religious minority.[...]  Read more