BUREAU OF ANIMAL INDUSTRY. 41 



Series 1 illustrates the meat-inspection work of the Bureau. 



(a) Practical demonstration of the microscopic inspection of pork for trichinae. 

 Three assistant microscopists are engaged in examining samples of pork 

 from one of the official abattoirs. A specimen of pork containing trichinae 

 is under a microscope, arranged for the inspection of visitors. 



(6) Plaster life-size models of a half of a beef carcass, a carcass of mutton, and a 

 hog carcass to show how they are branded after having been inspected and 

 passed as wholesone. 



(c) Articles used in the inspection of meat and live animals, suchtas tags, brands, 



seals, sealing presses, "stamps, certificates, sample boxes, compressors, etc. 



(d) Photographs of the ante-mortem and post-mortem inspection of cattle. 



Series 2 illustrates how cattle are inspected and tagged prior to 

 exportation, the manner of loading animals upon the vessels, and the 

 way in which vessels are fitted to secure the safe and comfortable 

 transport of animals to foreign countries. 



(a) Model of part of stock yards, showing the employees of the Bureau of Animal 

 Industry engaged in inspecting and tagging cattle for export. 



(6) Model of section of cattle-carrying steamer and pier and stock car. This shows 

 how cattle are loaded from cars into steamer and how they are stowed on 

 board, and the character of the fittings required on vessels engaged in the 

 cattle-carrying trade. 



(c) Photographs showing the inspection and tagging of cattle for export, the load- 

 ing of a steamer with cattle and horses, and views of the decks to show the 

 fittings on a modern cattle steamer. 



Series 3 illustrates the cause and appearance of the disease known 

 as sheep scab or scabies in sheep, and the spread of which is largely 

 prevented by dipping in a preparation which kills the parasite. The 

 method of dipping is well shown by models and photographs. 



(a) Models of sheep-dipping plants, showing how sheep are dipped for the preven- 



tion of scabies. Two forms of vat are illustrated. 



(b) Two mounted sheep, illustrating the effects of scabies, one in the early stages 



of the disease, the other in a more advanced condition. 



(c) Two wax models, greatly enlarged, of the male and female parasite causing 



the disease of scabies in sheep. 



(d) Photographs of sheep-dipping scenes. 



Series 4 gives photographs of Angora goats : Views of individuals 

 and groups, pasturage, effect of "goating " on brush land, degrees of 

 fineness in mohair, etc. 



Series 5 refers to Texas-fever work. 



(a) Calfskin, to which are affixed wax models of the Texas-fever tick. This is to 



show the appearance of the ticks and the way in which they attach them- 

 selves to cattle, selecting the more tender and protected parts on the under 

 side of the body. 



(b) Maps showing the part of the United States infected with Texas or splenetic 



fever in cattle, one map containing the entire area, others showing sections 

 on a larger scale. 



Series 6 is a very^complete exhibit of the horse's leg, foot, and shoe — 

 the anatomy of the leg and foot; samples of feet, illustrating various 

 abnormal conditions affecting them; the result of improper shoeing; 

 how to correct abnormalities by using proper methods of shoeing; 

 various kinds of shoes, and horseshoeing tools. 



Series 7 illustrates the work of the laboratories of the Bureau of 

 Animal Industry in the investigation of the causes and means of pre- 

 vention of animal diseases. 



(a) Working laboratory, fitted with all the necessary apparatus for investigations 



in pathology, bacteriology, and zoology. 

 (6) Model of chute used for vaccinating calves against blackleg, and also for 



dehorning them. 

 Blackleg virus and vaccine. 



