McGill University Thèses et mémoires publiés en 1933

Although our knowledge of protein and carbohydrate metabolism has advanced with great strides in recent years, relatively little interest has been focussed on fat metabolism. A true understanding of the factors that determine the level of the various constituents in the blood is still lacking. Even the intermediary products of metabolism have not yet been isolated. The great obstacle to the advancement of knowledge in this case has been a lack of aocurate methods. A particular attempt has been made in this present work to investigate the reliability of the methods employed and considerable time has been spent in this …  Lire la suite

The work embodied in this thesis arose as a sequel to an attempted analysis of the conditions necessary for the production of gastric juices by electrical stimulation of the vagus nerves. As shown by previous investigators, secretion produced in this way differed markedly from regular gastric juice. Like the latter it possessed a high digestive power but differed in that it had a comparatively low acidity and contained a large amount of mucus or mucoid-like fluid. [...]  Lire la suite

The publication in 1833 of the remarkable work of William Beaumont on "Experiments and Observations on the Gastric Juice and Physiology of Digestion" opened up the experimentalfield for the investigation of the stomach. As Sir William Osler pointed out in his address before the St. Louis Med1cal Association in 1902, there had been other instances of artifioial gastric fistula in man which had been the subject of experimental study, but the case of St. Martin with which he deals stood out from all the others on account of the ability and care with which the experiments were conducted. [...]  Lire la suite

The literature dealing with vocational guidance may readily be divided into two categories: (1) Theoretical discussion. (2) Experimental programmes of vocational guidance includinga follow-up of the individuals advised. There is an abundance of literature listed under the first division. In this discussion all such articles and books have been discarded, emphasis being placed entirely upon experimental results. [...]  Lire la suite

"Wine is the living blood of the grape".(1) It is the suitably fermented juice of freshly gathered grapes. There is no such thing as unfermented wine, even if the word "wine" issometimes used in connection with other fruits to denote a beverage which has fermented. There is a great deal of water in the juice of grapes - about 80% or more of its tota1 weight, p1us anything between 10 and 15% of grape-sugar, which, when duly fermented gives between 10 and 15% alcohol. [...]  Lire la suite

Relatively little is known about the stability of the ring in cyanocyclopropanes. Another worker in this laboratory (I) has shown that the ring is not opened by concentrated sulphuric acid in the cases investigated, and all the instances reported in the literature are recorded below. Our aim was first to prepare a nitrile or type (A) by the reactions found suitable in analogous work, and when this was unsuccessful, to secure others that would be suitable for the work in hand. [...]  Lire la suite

The successful application of the use of cyanide solutions for the extraction of gold and silver from their ores, may be said to date from the MacArthur and Forrest patent of 1888. Since that date it has become by far the most important method of extracting gold. While, however, many investigations have been made on the reactions that occur, most of these researches were made in the early days and much of the later work has been devoted solely to mechanical improvements in the process. [...]  Lire la suite

This work began as a further study of the effect of temperature on stomatal movement as commenced by Scarth and Brown (unpub.). As temperature effects cannot be studied alone, the other environmental factors were taken into account, especially turgidity of leaf and factors governing night opening of stomata and, as it turned out, the most important result of the investigation concerns the latter. [...]  Lire la suite

The presence of deposits of chromite in the Eastern Townships of Quebec, has been known since 1842 and in the annual reports of the Geological Survey of Canada and of theQuebec Bureau of Mines, as well as in other geological literature published since that time, there are numerous references to new discoveries, and brief descriptions of individual deposits are given. More detailed investigations have been made by Obalski(l) 1894-95, 98, Cirkel(2) 1909, Dresser(3) 1913, Harvie(4), and Denis(5). While these authors have attacked the problem largely from the economic point of view, they have also given consideration to the question of …  Lire la suite

In 1860 Pasteur discovered and studied the optically active forms of tartaric acids; he regarded optically active molecules as having an asymmetric structure, two (or more)configurations being possible. Van't Hoff imparted a more concrete form to this conception by the discovery that in most optically active compounds at least one carbon atom was linked to four dissimilar atoms or groups, and he termed the carbon atom thus linked an "asymmetric carbon atom". [...]  Lire la suite

Mount Johnson is the smallest but one of the best known of the Monteregian Hills; it has become, since it was first described in detail in 1963 by Dr. Frank D. Adams, a classical example of centripetal differentiation in a small body of igneous rock. It shares with the Shonkin Sag laccolith of Montana and the Sudbury lopolith of Ontario the distinction of being cited in many textbooks of geology and in many discussions on differentiation. [...]  Lire la suite

The pioneer investigation of Caignard de la Tour, in 1822, on the transformation from the liquid to the gaseous state, laid the foundation for one of the most fundamental andperplexing problems which has commanled the interest and challenged the ability of chemists and physicists for over a century. Subsequent investigations on this transformation resulted in the evolution of two divergent opinions concerning the nature of the phenomenon. The adherents to the classical theory of van der Waals, which postulates continuity in properties throughout the transformation, explain deviations from the theoretical behavior on the basis of experimental error. Opposed to this …  Lire la suite

In 1929 the American Geographic Society undertook the planning and financing of a research programme which included a socio-economic study of the Canadian Prairie Provinces. A research body, the Canadian Pioneer Problems Committee, whose members are on the Staffs of Canadian Universities, was formed for the express purpose of directing the Canadian part of the programme. A five-year project is under way and it includes a survey of social and economic conditions in selected areas of the Prairie Provinces. The survey is a direct outcome of a growing body of opinion that foundations ought to be laid for a science …  Lire la suite