IV BUREAU OF ANIMAL INDUSTRY. 
Part 23, pages 1719 to 1805.— Authors Pfender to Qvortrup. Issued February 16, 
1909. Price 15 cents. 
Part 24, pages 1807-1893.— Authors R to Rizzo. Issued October 9, 1909. Price 
10 cents. 
Part 25, pages 1895-1979. — Authors Roack to von Rzewuski. Issued November 29, 
1909. Price — cents. 
Part 26, pages 1981-2076.— Authors S to Schnyder. Issued June 2, 1910. Price 
— cents. 
Part 27, pages 2077-2168.— Authors Schoch to Silvestrini. Issued July 5, 1910. 
Price — cents. 
Part 28, pages 2169-2250.— Authors Sim to von Stenitzer. Issued July 16, 1910. 
Price — cents. 
Part 29, pages 2251-2326. — Authors Stenroos to Szyuuinski. Issued July 25, 1910. 
Price — cents. 
SUBJECT INDEX. 
Trematoda and trematode diseases <Bull. 37, Hyg. Lab., U. S. Pub. Health & 
Mar.-Hosp. Serv., Wash., June, 1908, 401 pp. [W a , W m .] 
