McGill University Thèses et mémoires publiés en 1934

A study was made of the effects of stimulation, and of section on cells of the eat's submaxillary gland. Sympathetic and adrenalin stimulation caused discharge activity in demilune cells. Parasympathetic stimulation acted similarly on alveolar cells but not on demilunes. Both types of stimulation caused changes in striated ducts but the implicationa are not clear. A true augmented secretion was demonstrated. Histological results showed it to be mainly an increased sympathetic-demilune activity. Section of chorda tympani caused marked changes in striated ducts; alveolar cells were largely inactive; demilunes were in continued activity. Section of cervical sympathetic and extirpation of superior …  Lire la suite

This thesis presents a brief review of the cbildhood, early manhood and character of Pierre Loti before visiting Turkey. The five visits of Loti to Turkey are discussed, particularly in their relationship to the influence they have on the character and mental outlook of the man. Loti's impressions of Turkey, its people, their social customs and their religion are compared with those of contemporary writers on Turkey. Finally, the description of the Turkish women and her life in the harem as depicted in "Les Desenchantees", is considered, and the question discussed as to whether it is truly representative of the …  Lire la suite

This thesis is the report of a survey of the iron foundries of a company which manufactures chilled cast-iron car wheels, brake shoes, and grey iron castings. The first part includes: (1) an analysis of the markets for the products of this plant, including a forecast of the probable developments of the immediate future, and (2) an examination of the influence of drastic fluctuations in business activity on policies concerning the installation of capital equipment. [...]  Lire la suite

The writer points out the profound influence which the railways, as "equalisers of opportunity," have had in creating and maintaining the existing economic structure of Canada and how the recent development of competition from motor transport and in lesser degree, air transport, threatens to make it impossible for them to continue this function, with serious consequences to the economic life of the nation. After a discussion of the vexed question of motor vehicle taxation and of the various means which might be taken to meet the growing competition from motor transport, it is concluded that the rationalisation of railway services …  Lire la suite

The kinetics of the oxidation of gaseous propionaldehyde have been investigated from 120 to 170°C by a static method. The reaction is a chain process and is similar to the oxidation of acetaldehyde. The rate is proportional to the square of the aldehyde concentration, and independent of that of oxygen. The apparent heat of activation is 15,400 calories per gram molecule. The following mechanism is suggested for the oxidation of aldehydep {...]  Lire la suite

This thesis covers several individual investigations. Section I. The responses of frogs, intact and operated, to turn-table rotation, have been graphically registered. Section II. Two equilibrial reactions, hitherto obtained only from frogs with labyrinthine operations, have been found to occur in normal frogs. [...]  Lire la suite

The power of water is so varied and extensive in its applications that its study is of singular iinterest. Water is responsible for the formation of many existing geological structures; in the realms of engineering and locomotioin it is one of the chief resources of power; although it is very widely recognized in its connection with steam, nevertheless, steam's modern competitor, electricity is also primarily developed from thsi same source. This serves ito illustrate how widely distributed are the powers of water. [...]  Lire la suite

The following measurements have been performed (1) the sorption of water vapour on beaten and unbeaten wood pulps. (2) The sorption of water on wood pulps which had been heated. (3) The sorption of, methyl alcohol vapour on groundwood, unbleached kraft and bleached sulphite pulps. (4) The sorption of n-propyl alcohol vapour on bleached sulphite pulp and purified cotton both with and without preliminary washing of the samples with propyl alcohol. [...]  Lire la suite

In a recent publication (I) Allen and Spanagel described a compound (III) having a carbonyl bridge, prepared from anhydroacatons benzil (I) by a dehydration reaction, two moleculesof the diphenylcyclopentadienone (II) first formed undergoing a diene synthesis. [...]  Lire la suite

Contains brief historical summary; outline of existing theories regarding production of cavities, pitting, noise and vibration; record of experiments conducted using vane to produce cavities; some results of endurance tests with relationship between microstructure of cast iron and its pitting; conclusions; bibliography. [...]  Lire la suite

The histologic features of the following diseases have been studied: (1) Delphinium Black Spot, caused by Bacterium delphini (E.F.Smith) Bryan. (2) Cauliflower Leaf Spot, caused by Bacterium maculicola (McC.) McCulloch. (3) Black Rot of Crucifers, caused by Bacterium campestre (Pam.) E.F.S. (4) Fireblight of Apples and Pears, caused by Bacillus amylovorus (Burrill) Trevisan. (5) Bacterial Blight of Bean, caused by Bacterium phaseoli E.F.Smith. (6) Beet Leaf Spot, caused by Cercospora beticola Sacc. The most important findings were in connection with cicatrice formation. In (2) and (6) active disease resistance responses, including occlusion of the intercellular spaces and, under warm Bonditions, …  Lire la suite

Cyanoacetamide has been added to a-methoxybenzalacetophenone, with the production of a highly substituted piperidine. This, by the action of different reagents, has been converted into a number of pyridines and hydropyridines. [...]  Lire la suite

A description is given of the geology of the two areas fifteen miles apart; one the Duprat lake area, is situated in a district characterized by massive copper deposits; the other, the Rouyn lake area, in a district of gold mineralization. A comparative study is made of the different types of metamorphosis in the two areas. [...]  Lire la suite

This thesis comprises two parts, the first being a general description of the Yonteregian province with a consideration as to the origin of the nepheline syenites, and the second, a description of the rocks of a small area on the southwest side of Mount Royal. A, geological map of the thesis area accompanies this thesis. The topography of the area was deduced from a plane table survey. [...]  Lire la suite

Tetraphenylcyclopentadienone can be used as one of the components in the diene synthesis. Products are described resulting from the addition of maleic anhydride, maleic, fumaric, and acetylene dicarboxylic esters, and benzoyl phenylacetylene. In some instances the primary addition products containing a carbonyl bridge (hexendones) could be isolated. Tetraphenylbenzene derivatives result from secondary reactions. Neither benzalacetophenone, dibenzoylethylene nor diphenylketene added to tetraphenylcyclopentadlenone. [...]  Lire la suite

Tetraphenylcyclopentadienone can be used as one of the components in the diene synthesis. Products are described resulting from the addition of maleic anhydride, maleic, fumaric, and acetylene dicarboxylic esters, and benzoyl phenylacetylene. In some instances the primary addition products containing a carbonyl bridge (hexendones) could be isolated. Tetraphenylbenzene derivatives result from secondary reactions. Neither benzalacetophenone, dibenzoylethylene nor diphenylketene added to tetraphenylcyclopentadlenone. [...]  Lire la suite

Although pyrrhotite is a mineral of common occurrence in nature its distribution has never been systematically investigated. This thesis represents the first attack on the problem. The polished surfaces of some 174 rock specimens were examined and the opaque minerals identified. Pyrrhotite was found to occur in basic igneous rocks and in metamorphic rocks. The results indicate that it occurs more commonly in rocks which contain nepheline. Pyrrhotite is most common in rocks of the Monteregian province. As pyrrhotite was found in only 14 of the 174 sections examined it would seem that this mineral does not occur as commonly …  Lire la suite

Physical Education for women in colleges, both in Canada and the United States, seems to have passed through three stages. It was first introduced to combat physical defects as a result of study. The Calendars of McGill (1907-8 etc) make frequent mention of exercises "to counteract bad and harmful positions assumed during study hours." The second stageconsiders this subject as a prevention for these defects, while the third stage though not discarding the first two ideals, recognizes social, mental and moral values also arising through Physical Education. Nary Lyon, the founder of Mount Holyoke College recognized these values as early …  Lire la suite

Previous investigations of the kinetics of homogeneous unimolecular gas reactions have never been carried out in a high pressure region. A new apparatus and technique is described waereby it is possible to investigate these reactions over a wide pressure range. This apparatus has been applied to the investigation of the decomposition of ethyl ether. [...]  Lire la suite

This paper reports the results of chemical analyses made on samp1es of mixed pasture herbage collected from fertillized and unfertillized plots 1n 1931 and 1932 and of distinct species in 1932 only. The % nitrogen in the mixed herbage was significantly increased by an application of superphosphate, by lime and during the first year of the experiment by potash. The calcium and phosphorus contents in the mixed herbage were significantly increased only by superphosphate. The calcium: phosphorus ratio was decreased by superphosphate in 1931 and inoreased by lime in 1932. [...]  Lire la suite

Propionaldehyde, isobutyraldehyde, trimethylacetaldehyde, and dibromacetaldehyde have been condensed with glycerol, the isomeric five and six membered glycerol acetals isolated in each case, and their structure and physical properties determined and compared with those of related compounds. The ratio in which the two isomers are formed from the different aldehydes has been carefully determined in each case and shown to depend to a marked degree, on the polarity of the aldehyde in question. The ease of glycerol cyclic acetal formation {total mixed glycerol acetal formation) is shown to decrease, with increase in the negative polarity of the aldehyde group, while the …  Lire la suite

Cette these est une étude de quelques intérieurs dansles romans d'Honoré de Balzac; elle oomprend une analyse des impressions générales qui s'en dégagent pour voir si elles etablissent un rapport entre la psychologie du personnage et son milieu. Pour faciliter cette étude j'ai fait de ces intérieurs deux grandes divisions; les intérieurs de Paris et ceux de Province avec les subdivisions suivantes; les intérieurs de luxe, les intérieurs bourgeois et les intérieurs du peuple. [...]  Lire la suite

The direct acetylation of a prepared beechwood meal has been carried out with a view to the separation of an acetylated lignin. The maximum solution by acetylation uas 76.7% of the lignin present in beech-wood. A separation of the acetylated lignin in high yield by preferential solvent extraction was not obtained. The soluble acetylated product was subjected to methylation followed by hydrolysis and a lignin fraction separated. The maximurn yield was 24.7% of the lignin present in beech-wood. The hydrolysed product was partially solublein dioxane. The dioxane soluble fraction was separated into an ether soluble and ether insoluble fraction. [...]  Lire la suite

Experiments have been carried out in guinea pigs to demonstrate that hyperplasia of the thyroid gland and reversion to the colloid phase could be induced by subtotal extirpation ofthe thyroid gland and partial tracheostenosis. This reversion was observed in the thyroid remnants of the neck; also, in another series of experiments, reversion to the colloid phase took place in the neck remnants and autotransplants. It was concluded that the changes so produced must be due to a bloodborne factor. A "cyclic hypothesis" of thyroidphysiology was presented, in which it was stated that the body requirements for thyroxin, the thyreotropic hormone …  Lire la suite