UNIVERSITY OF FLORIDA AN. 591.-Special Topics in Aeronautical Engineering. Variable credit. The first half of the course AN. 591-592. Offered 1, 2, 3. Laboratory, lectures, or conferences covering specially selected topics in Aeronautichi Engineering. AN. 592.-Special Topics in Aeronautical Engineering. Variable credit. The second half of the course AN. 591-592. Offered 1, 2, 3. AGRICULTURAL CHEMISTRY Instructional Staff 1951-52 Black, A. P., Head; Senn, V. J.; Stearns, T. W., Thomas, G. A. ACY. 203.-Analytical Chemistry. 2 hours, and 3 hours laboratory. 3 credits. Prerequisites: CY. 109-110 or CY. 121-122. Offered 1. Qualitative analysis for agricultural students. ACY. 208.-Agricultural Biochemistry. 3 hours. 3 credits. Prerequisites: CY. 121-122. Offered 2. An introductory course in organic chemistry and biochemistry, especially for agri- cultural students. ACY. 431.-Agricultural Analysis. 2 hours, and 3 or 6 hours laboratory. 3 or 4 credits. The first half of ACY. 431-432. Prerequisite: CY. 331 or its equivalent. Offered 1. Quantitative analysis of agricultural products. ACY. 432.-Agricultural Analysis. 2 hours, and 3 or 6 hours laboratory. 3 or 4 credits. The second half of ACY. 431-432. Offered 2. GRADUATE COURSES Prerequisites: See Department of Chemistry ACY. 541.-Biochemistry. 3 hours or its equivalent. 3 credits. The first half of the course ACY. 541-542. Prerequisite: Organic Chemistry. Of- fered 1. A general survey course in Biochemistry for graduate students, and for undergrad- uates by special permission of the instructor. ACY. 542.-Biochemistry. 3 hours or its equivalent. 3 credits. The second half of course ACY. 541-542. Offered 2. ACY. 543.-Biochemistry Laboratory. 3 hours. 1 credit. The first half of course ACY. 543-544. Prerequisite or corequisite: ACY. 541. Offered 1. Accompanying laboratory course for ACY. 541. ACY. 544.-Biochemistry Laboratory. 3 hours. 1 credit. The second half of course ACY. 543-544. Prerequisite or corequisite: ACY. 542. Offered 2. Accompanying laboratory course for ACY. 542. ACY. 570.-Research in Agricultural Chemistry. 2 to 6 credits. The statement "Offered 1" means offered first semester; 2, second semester; 3, summer session.