Much information is available in the field of Apiculture, some technical and some practical. It would appear, however, that there is justification for an attempt to provide information of a practical nature for use in high school Vocational Agricultural classes. Available publications either are too comprehensive or do not contain sufficient material for students of Vocational Agriculture who wish to study beekeeping. It is the intent of this thesis to consolidate and organize factual information for class use by teachers, to suggest a few student problems and activities, and to develop a course calendar of units for study. A detailed discussion of only one type of honey production is presented; but from this type (bulk-comb honey) any other form of honey production may be developed. / M.S.

This questionnaire study was an attempt to determine the practices teachers follow in planning and conducting a program of vocational education in agriculture in Virginia high schools. The study revealed that the thinking of the regular teachers of vocational and the assistant teachers of vocational agriculture in charge of veterans was comparable as indicated by the nearly equal percentage of teachers from both groups who checked the practices on the questionnaire as “Commonly practiced" or "Recommended". Many practices were not carried out by a majority of the teachers; however, the additional recommendations to these practices indicates that the majority of all teachers favored the use of most of those practices in the instructional program of vocational agriculture. The responses to some practices were not complete, particularly by the assistant teachers of vocational agriculture in charge of veterans who failed to provide information on the practices dealing with the FFA program. The number of teachers who failed to recommend these practices were in a small minority and only one practice was checked as not recommended by a majority of the regular teachers of vocational agriculture. On the whole, most practices were favored by all teachers. The large majority of teachers who carried out these practices or recommended that they be carried out would tend to indicate that they favor using these practices in the program of vocational education in agriculture in Virginia high schools. / M.S.

The teaching and research programs at the Virginia Polytechnic Institute have been hampered for many years by the lack of adequate library facilities. Even though books are available through gift and exchange sources, the lack of a library building precludes the effective expansion of the book collection. The use of the present collection, which numbers a.bout 150,000 volumes, is difficult because the present facilities are overcrowded and unattractive. It is the purpose of this thesis to analyze the library situation at V. P. I., and to present a design study for a library building to effectuate an adequate library program for V. P. I. The success of the thesis is considered to be inherent in its usefulness to those who must ultimately plan a library for the college. / M.S.

From the results obtained in this investigation, the following conclusions can be drawn: 1. A substance inhibits corrosion only under certain conditions, and under other conditions it may not be an inhibitor, but may be inert or an accelerator. 2. No compounds tested in concentrations of 0.01 and 0.10 percent nitrogen, were found to inhibit the corrosion of steel in 5 percent phosphoric acid at 25°C. and under the conditions of aeration and agitation used. 3. Sodium chromate is an inhibitor in concentrations of 1 percent for the corrosion of steel by a 5 percent, aerated, agitated, phosphoric acid solution at 25°C. 4. The mechanism of the corrosion of copper proposed by Whaley is not substantiated. Chelation probably is not the mechanism by which 2-nitro-l-butanol inhibits the corrosion of copper in a 5 percent phosphoric acid solution. 5. Inhibitors that are used and are efficient for one acid under certain conditions cannot always be said to work for other acids under other conditions. / M.S.

M.S.

M.S.

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

As <i>in vivo</i> study of the alteration of the erythrocytes from forty-six young chickens of various breeds infected with tree strains of Newcastle disease virus has been made. Three strains of Newcastle disease virus which varied in their pathogenicity for chickens, namely B1, N1, and N2 strains, have been studied, comparing the agglutinability of the red blood cells by the tube hemagglutination method and the rapid-plate technique. Graphs and tables have been prepared showing the <i>in vivo</i> effect of the virus strains on the chicken crythroeytes when the viral strains are used as the agglutinating agent. By mixing a drop of whole blood with 0.05 ml. of the B1 strain of Newcastle disease virus formalized with 0.10% formalin it may be possible to diagnose Newcastle disease in chickens, without the aid of the standard hemagglutination-inhibition (HI) test. The author believes that with more study the plate method may be of real value as a screening or presumptive test in the diagnosis of Newcastle disease infection. / M.S.

A study of growth rate and body type of calves of both sexes; estimates of heritability of growth rate and body type; and the effect of data of birth on growth rate was made on 76 calves in the same herd sired by four unrelated bulls. The calves were scored for body types at birth, weaning and the females at approximately fifteen months of age. All calves were weighed at weaning and the females at approximately fifteen months of age. The females were fed a limited ration from weaning until the fifteen month weight was taken. The weights of the calves were adjusted by regression to 240 days at weaning and 395 days as yearlings. The analysis of variance, regression, and correlation were used in the analysis and interpretation of the data. Heritability of weaning weight and type score was estimated from intra-class correlation obtained from the analysis of variance. / M.S.

The object of this thesis is to design, build, and calibrate a coal-air flowmeter to operate in a pipe line through which a mixture of powdered coal and air are being blown; and to investigate the accuracy of the meter while operating at different air-fuel ratios. It is the authors intention to test the coal-air flowmeter in a pipe line in which conditions exist that closely simulate actual conditions that exist in power plants burning pulverized coal. The flow characteristics of the meter will, as near as possible, be the same as may be found in a typical industrial application. For this reason, a large size pipe line will be used and the air pressure in the pipe lin will be relatively low. It is believed that a coal-air flowmeter has not before this time been investigated in a large pipe and utilizing low pressures. Because of conditions over which the authors had no control, flyash had to be substituted for coal for the testing of the coal-air flowmeter. The authors are mainly interested in the measurement of the flow of coal and therefore have referred to the meter as a coal flowmeter throughout this thesis. The authors believe the use of flyash as the test medium will demonstrate the usefulness of the meter to measure the flow of any type of finely divided particle being carried by an air stream. / M.S.