At the outset of this investigation its purpose was stated as that of discovering causes contributing to termination of schooling on the part of certain children who had completed the seventh grade at Mount Pleasant School; also, that of observing the results of dropping out of school at that time. In attempting to carry out such purposes, an intensive study was made of 50 former pupils of the school who, for convenience, were called terminators. These persons were members of a total group of 74 who had stopped formal education at the end of the seventh grade during the years from 1938 to 1947. One consequence of the investigation was a composite picture of the group which was presented in the preceding chapter. Another result of this endeavor was the list of causes for termination which appear in Chapter IV. Prominent among these were (1) economic drives, (2) shifting of interest from school to vocational pursuits, (3) incapacity for the kind of work the school was offering, and (4) indifference to school on the part of parents. The relative dominance of each of these causes, as it appeared in the study, is indicated by the order just given. As the work progressed the impression grew that some of the children might have overcome the other negative factors in the situations if they had been able, somehow, to cope with their economic disabilities; this, despite their somewhat low intelligence as indicated by test results. If it be further assumed that the subjects not only could but should have profited by enrolling in high school then it seems inescapable to conclude that their failure to go on was a double misfortune both to the terminators and to society, caused by forces over which they had little or no control. / M.S.

M.S.

This thesis gives (1) a review of literature on pastures and hogging off crops, (2) a description of the farming system of the Peanut Section of Southeastern Virginia as it relates to swine production, and (3) an outline of procedure for two experiments dealing with swine production problems in the Peanut Section. / M.S.

Previous investigators have studied the hydrogenolysis of sugars under high pressures and temperatures. The purpose of this investigation was to study the possibilities of producing low molecular weight polyhydric alcohols from glucose by electrochemical methods. A procedure was devised for the separation of low molecular weight polyhydric alcohols from a mixture of polyhydric alcohols which constituted extracting the mixture with acetone at a temperature of 130 ℉. The acetone proved to be a solvent for the low molecular weight polyhydric alcohols. Acetone-soluble material was produced by the electrolysis of glucose at lead or zinc cathodes in the presence of 10 per cent sodium hydroxide at a temperature of 100-110 ℉, and a current density of 7.0 amperes per square decimeter. The range of current density investigated was from 4.0 to 7.0 amperes per square decimeter. The temperature was 100-110 ℉; the cathode material was lead sheet which was given a Tafel activation; the electrolyte contained 10 per cent sodium hydroxide and 7.5 per cent sodium sulfate; and the catholyte was agitated. The effect of the current density on the reduction of glucose and the production of acetone-soluble material was negligible over this range and condition of electrolysis. The amount of acetone-soluble material produced at a current density of 7.0 amperes per square decimeter in the presence of ten per cent sodium hydroxide at a temperature of 100-110 ℉ was 80.8 per cent by weight of the glucose reduced. The amount of current passed was 14 ampere-hours. The acetone-soluble material produced in the presence of five per cent sodium hydroxide was 70.8 per cent for the same conditions and time of electrolysis. With variation of the amount of current passed to 28 and 42 ampere-hours, the acetone-soluble material produced in ten per cent sodium hydroxide was reduced to 56.9 and 15.1 per cent. The acetone-soluble material produced in the presence of five per cent sodium hydroxide was 26.4 and 11.3 per cent. The electrolysis of sorbitol in the presence of ten per cent sodium hydroxide at a lead cathode at 100-110 ℉ with the passage of 14 ampere hours of current produced no acetone-soluble material. The fractionation of the acetone-soluble material resulted in a fraction which distilled at 109-110 ℃ at 8 mm of pressure. The residue polymerized which set up to a hard water soluble, acetone-insoluble mass upon cooling. A summary of the known properties of the distillable compound, as indicated by tests performed in this investigation, is as follows: A polyhydric, methyl ketone, or aldehyde. Soluble in water, acetone, and ethanol. Insoluble in ether. Boils at 109-110 ℃ at 8 mm pressure. Forms a 2-4 dinitrophenylhydrazone derivative with an uncorrected melting point of 225-227 ℃. The compound could not be identified from the literature. / M.S.

The three basic requirements for unobstructed, short path distillation are: a surface over which a think layer of distilland is distributed, a cooler condensing surface in close proximity to the evaporating surface, and a suitable system for evacuating the space between the two surfaces. When the distance of transfer between the evaporating and condensing surfaces is comparable to the mean free path of the vapor molecules in the residual gas, the process is known as molecular distillation. [Continued in document] / Ph. D.

M.S.

M.S.

M.S.

no abstract provided by author / Master of Science

M.S.