is obvious and condemnation of part of the carcase or of 

 the whole, as the case may be, would follow. Such a 

 tubercular change in the worm-nest could not, of course, 

 escape the notice of any person preparing or examining 

 the carcase. 



We are greatly indebted to Mr. C. J. Vyner, m.r.c.v.s., 

 Chief Veterinary Inspector to the Department of Public 

 Health, Sydney, for his kindness in supplying us with ample 

 material for our investigations, and with valuable informa- 

 tion as to the condition, and also to the three members of 

 his staff, viz., Messrs. Everett and Vidler for obtaining 

 blood films for us, and especially Mr. W. G. Johnston for 

 furnishing much important data and specimens. We would 

 also like to express our thanks to those members of the 

 staff of this Bureau, who have so cordially assisted us in 

 this investigation. 



On the ANATOMY and POSSIBLE MODE of TRANS- 

 MISSION OF FILARIA (ONCHOCERCA) GIBSOM. 

 By T. Harvey Johnston, m.a.. b.sc, Assistant Microbiologist 

 and J. Burton Oakland, m.d.m.cii., Principal Assistant 

 Microbiologist. 

 (From the Government Bureau of Microbiology, Sydney, 

 New South Wales.) 

 [With Plate XIV.] 

 [Read before the Royal Society of N. S. Wales, July 6, 1910.] 



Filaria (Onchocerca) Gibsoni, Cleland and Johnston, is a 

 nematode parasite which causes the " worm-nests " not 

 nly found in Australian cattle. In another paper 1 



