15 



The following shows the proportion o£ the hospital in- 

 patients suffering from hydatids: — Four English hospitals, 

 about one out of 900 ; Victorian do., about one out of 175 ; 

 Js'ew South Wales do., about one out of 380 ; South Australia, 

 do., about one out of 245 ; Queensland do., returns inadequate ; 

 New Zealand do., about one out of 746 ; Tasmanian do., about 

 one out of 325. 



Table showing the number of domestic herbivora (including 

 sheep and horned cattle) per 100 inhabitants in the fol- 

 lowing countries : — 



The numbers for G-reat Britain, Prance, Germany, and 

 Europe as a whole are from " The Balance-sheet of the World, 

 1870-80," by Michael G. Mulhall, F.S.S. ; London, Edward 

 Stanford, 1881 (table 27, page 40). Those for Iceland are 

 from Krabbe, " Eecherches Helminthologiques en Danemarket 

 en Islande," page 59. Those for the colonies of Australia are 

 from Hayter's '• Victorian Tear-Book, 1880-81" (folding- sheet 

 Ko. 8). "When we come to consider the number of domestic 

 herbivora in each colony, we find that in Victoria, w^here, 

 according to our statistics, hydatid disease in man is most pre- 

 valent, the number of domestic herbivora per 100 inhabitants 

 is the lowest. So that it is quite plain that other important 

 elements must co-operate to cause hydatids in man ; and this 

 bears out my assertion that domestic herbivora do not directly 

 infest man with Echinococcus disease, but merely suffer in com- 

 mon with him. 



