McGill University Thèses et mémoires publiés en 1929

Woodhead, W. (Supervisors)  Lire la suite

Welding, as an aid to the fabrication and erection of structural steel, is in its infancy. But a few years ago welding jobs were oonfined to the repair of broken castings, the connection of parte subjected to little or no stress, and other minor uses. The last few years, however, have witnessed a remarkable expansion of the field of welding activity. Improved methods of welding and better welding machinery have made this type of connection much safer than formerly. But still the structural trade looks askance at the welded connection in important structures. So far the building trade has adopted …  Lire la suite

Furness, L. (Supervisors)  Lire la suite

McRostie, * (Supervisors)  Lire la suite

In recent years, an increasing mass of evidence has accumulated which points to considerable variation in the morphological and physical activities of bacterial species, and more particularly to variations that affect the colony form. These phenomena have gradually attracted the attention of bacteriologists and according to the literature of the past ten years, the tendency seems to be to accept the idea that there exists some orderly mechaniam which causes these variations. Thus a new but definite branch of bacteriological research is developing and is being studied under the name of "Microbic Dissociation". [...]  Lire la suite

Macallum, A. (Supervisors)  Lire la suite

During the summer of 1928, the writer was engaged, as a prospector in the interior of Newfoundland and in June visited the Gull Lake copper deposit, where he saw the mineral cordierite for the first time. The rest of the summer was spent in the ftlotre Dame Bay region, to the north-east of Gull Lake, where the geology is similar. The writer1 s knowledge of the Amulet copper deposit has been obtained chiefly from perusal of several papers on the geology of northern Quebec published in Canada during the past few years, particularly those by Dr. H, C. Cooke, of …  Lire la suite

In 1763 the French possessions in Canada were surrendered to Great Britain, which thereafter; ruled all the northern portion of the continent. Within fifteen years the greater part of this vast territory had seceded, and formed the new nation of the United States of America. The British colonies were henceforth limited to Nova Scotia, New Brunswick, PrinceEdward Island and Quebec, and the unsettled lands to the west. A century after the capture of Quebec from the French these remnants of the British American empire had developedfrom a scattered group of unimportant and unwanted colonies into a great Dominion - the …  Lire la suite

Scarth, G. (Supervisors)  Lire la suite

Blood platelets are small colourless bodies found in varying numbers ln blood. Osler {1874) was the first to recognise them as formed elements or blood. Their existence has beenrepeatedly affirmed and denied; yet, as Professor Tait -cf. Tait and Burke (1926) - recently stated, "no author who has ventured to extend his survey beyond the group of mammals has doubted either their existence or their close functional similarity to certain distinctive and readily observed cells common to the blood of all non-mammalian vertebrates and of inuumerable invertebrates as well". Their origin remains obscure. [...]  Lire la suite

The first land that Columbus encountered, was in the west Indles in latitude 24 degrees north, an island which he christened San Salvador, which is generally identified with Watling Island of the Bahamas. From San Salvador he passed on to other islands of the same group and thenoe to Cuba, Tortuga. and Hayti. Returning to Spain in the spring of 1493, be set outagain in September of the same year, and steering more to the southward than on his first voyage, he sighted Dominica, the other island to the north, now known as the Leeward and Porto Rico, and after …  Lire la suite

Progress in the art of cooking wood by the sulphite process for the production of cellulose pulp for papermaking and similar uses has been attained chiefly by empirical experience.Very little advance has been made toward the scientific explanation of the mechanism of the main reaction, that between the solution of sulphur dioxide and the lignin of the wood whereby the latter is dissolved. [...]  Lire la suite

Kellogg, C. (Supervisors)  Lire la suite

Hibbert, H. (Supervisors)  Lire la suite

Hemmeon, J. (Supervisors)  Lire la suite

The work to be descrited in this Thesis is an investigation of the effect of molecular attractive forces upon the velocity of chemical reaction. For reasons that will be brought outlater, the main reaction chosen for this study was the addition of hydrogen chloride to the three isomeric butylenes. Since in the present state of the science the magnitude of the forces of attraction that exist between the molecules of a compound cannot be directly measured or defined in terms of absolute units, recourse must be had to indirect determinations of these forces and to the use of a relative …  Lire la suite

At the present time, border competition is recognized as an important error affecting comparative yields in agronomic investigations. This is particularly true where varieties which differ greatly are grown in single adjacent rows, but it may also affect, although to a lesser extent, tests carried on in larger plots, unless some means of overcoming this affect is provided. There seems to be a diversity of opinion among the investigators working at different places as to the relative importance of competition under their conditions. [...]  Lire la suite

A casual glance through the literature makes at once evident the variety of uses aqueous Solutions of Hydrogen Peroxide are capable of. Its bleaching power energetic oxidizing properties and antiseptic action make it an important compound to applied Science. From the standpoint of pure science its interest lies both in the similarities and distinguishing characteristics of water. Owing to the attached to all the properties of water it is extremely important to study a compound whose properties more nearly approximate to water than any other substance we at present know. [...]  Lire la suite

On aurait pu craindre que la période d'après guerre ne vît diminuer la production littéraire et en particulier celle des romans. Il n'en est rien. Sans doute, nombre d'auteurs ou futurs auteurs ont disparu dans la tourmente, mais ceux qui restent semblent être atteints, par compensation, d'une fécondité inépuisable, voire même inquiétante, car la qualiténe semble pas aller toujours de pair aveo la quantité. [...]  Lire la suite

The work of J. Loeb in 1900, whose observations on oellular life and cellular activity in relation to electrolytes coming at a time when very 1ittle was known about this, opened the door for much study and thought. A solution containing a single electrolyte regardless of the chemical nature of the 1atter is fatal to all forms of cell life. The toxicity can be greatly lessened by the addition of a second Ionizable salt. this has been referred to as the "Antitoxic Action of Ions". For the cell to be able to efficiently and adequately carry on its functions of …  Lire la suite

Eve, A. (Supervisors)  Lire la suite

Kemp, H. (Supervisors)  Lire la suite

Hemmeon, J. (Supervisors)  Lire la suite

Dawson, C. (Supervisors)  Lire la suite

Macmillan, C. (Supervisors)  Lire la suite

Best, E. (Supervisors)  Lire la suite

Bell, J. (Supervisors)  Lire la suite

Lods, E. (Supervisors)  Lire la suite

Kemp, H. (Supervisors)  Lire la suite

Kemp, H. (Supervisors)  Lire la suite

Shaw, A. (Supervisors)  Lire la suite

Maass, O. (Supervisors)  Lire la suite

Hydrogen peroxide was discovered by Thenard in 1818 who early recognized its use as an oxidizing agent for organic compounds. Since that time the field opened by him has been invaded by a large number of investigators but comparatively until recent years no attention has been paid to the part played by temperature, concentration or condition of medium. Furthermore, much of the experimentation of this nature dealt with the effect of catalytic decomposition of hydrogen brought about by the presence of an alkali, or with the catalytic oxidation due to various metallic ions. [...]  Lire la suite

Much has been written and said, during the past decade, about Canadian literature. The organization of the Canadian Authors' Association has made our writers self-conscious and has encouraged them to discuss their craft, their mission, their accomplishments, and so on - not always in private, either; the establishment of a Canadian Book Week, with its accompanying radio talks, luncheon addresses and newspaper publicity, has attempted to arouse in our readers an interest in Canadian-made literary wares; handbooks by MacMechanLogan and French, Pierce and others have essayed to indicate the scope and quality of Canada's output of books and magazines. [...]  Lire la suite

McBride, W. (Supervisors)  Lire la suite

Kellogg, C. (Supervisors)  Lire la suite

The study of the polymerization and association of simple organic substances, and the nature of the super molecular state is the subject of intensive investigation at the present time, and is a problem, which as yet remains unsolved. Many important isolated facts have been discovered and a variety of (1) theories proposed, but, as Haworth points out withregard to polysaccharides, but which may be applied to polymerization and the supermolecular state in general, " - no finality is to be expected in the present state of knowledge. The time is probably not distant when greater harmony of opinion will prevail …  Lire la suite

Latham, G. (Supervisors)  Lire la suite

Noad, A. (Supervisors)  Lire la suite

Goforth, W. (Supervisors)  Lire la suite

Knowledge of the time rate of diffusion of fluids through solids is of interest on account of its bearing on the structure of solids. Much light can be cast upon the size and arrangements of the insterstitial spaces by such studies, and this often may lead to important applications in the field of surface chemistry, particularly in the case of coloidal systems such as gels. A most interesting field is that presented by the glass of gels which swell by processes of sorption. [...]  Lire la suite

The anatomy of birds has been the subject of many monographs and comparative treatises having for their aim the establishment of a classification based on natural or genetic affinity. Nesting habits, modes of progression, skeleton, and muscles have been examined in turn without arriving at a final settlement of the question. There are more species of birds than of mammals, but fewer definable orders. Birds as a whole present a degree of adaptive radiation such as is to be found in a single order of reptiles or of mammals, and this is expressed anatomically in the presence or absence, atrophy …  Lire la suite

The methods of research employed in elucidating the constitution of organic compounds have bean vary successful in the case of a large number of substances possessing well defined physical and chemical properties. But in the case of important naturally occurring bodies such as cellulose, starch rubber, proteins, etc., very little progress has been made indetermining their constitution. The ordinary physical and chemioal methods of research have been of no value owing to the experimental difficulties involved. [...]  Lire la suite

Certain significant factors in the hydro electric industry of Canada emphasize the importance of this industry and the part it plays in the nation's domestic and industrial life. Ninety-five per cent of the total output of the central electric stations of the Dominion is produced from hydraulic power machines. (1) This fact brings out forcibly the importance of water power in Canada when it is realized that only forty per cent of the primary power used in the United States of America (2) is hydraulic energy. Coupled with this outstanding predominence of water power as the prime motive force in …  Lire la suite

Tait, W. (Supervisors)  Lire la suite

Kemp, H. (Supervisors)  Lire la suite

Johnson, W. (Supervisors)  Lire la suite

King, L. (Supervisors)  Lire la suite

Willey, A. (Supervisors)  Lire la suite

Noad, A. (Supervisors)  Lire la suite