xxii First Report on Economic Zoology. 



Slollusca Some moUusca may carry germs, as oysters and cockles 



carry typhoid. 



Tunicata None. 



Fish None. 



Mammalia The imperfectly cooked flesh of various mammals may 



carry disease to man, as the flesh of pigs (cysts of Tainia 

 soliu7)i, and Trichina spiralis, thus producing tapeworm 

 and trichinosis in man) ; the flesh of oxen (cysts of 

 tapeworms, Txnia satji)iata) ; milk of cow and other 

 animals carries tuberculosis. 



GROUP E. 



Animals which concern Man as causing bodily injury or disease 

 (both possibly of a deadly character) to {A) his stock of 

 Domesticated Animals ; or (-B) to his Vegetable Plantations ; 

 or (C) to Wild Animals; or (D) Wild Plants in the pre- 

 servation of which he is interested. 



The examples coming in this- group are somewhat similar to those in 

 Group D, but in addition must be included also worms and insects, which 

 destroy crops and fruit, garden produce and forest trees, and such pests as 

 the frugivorous birds, rabljits and voles. This forms the largest group, 

 and is directly connected with the cultivation and improvement of land 

 by tillage and forestry, and the animals used by man in carrying on his 

 Avork, and kept for the improvement of the soil and food. 



The sub-grotips may conveniently be divided into smaller groups or 

 sections. 



Survey of Sub-geoup A of Group E. 



ANIMALS WHICH CONCERN MAN AS CAUSING BODILY INJURY OR 

 DISEASE (BOTH POSSIBLY OF A DEADLY NATURE) TO HIS STOCK 

 OF DOMESTICATED ANIMALS. 



This sub-group may be divided into smaller groups or sections as 

 follows : — Animals which concern man as causing bodily injm-y and 

 disease to his stock of domesticated animals, i.e. (a) cattle ; (/S) sheep and 

 goats ; (7) horses, asses and mules ; (8) the pig ; (e) elephant and camel ; 

 XX) guinea pig ; (77) dogs and cats ; ((9) rabbits, and (t) poultry. 



Survey of Section (o) of Scb-group A. 

 ANIMALS CAUSING BODILY INJURY AND DISEASE TO CATTLE. 



I. By direct injury. 



Protozoa None. 



Platyhebnia Tdi^ev^ovvn?, {Moniezia planissima) and cysts {Cysticercus 



bovis, C. tenuicollis) produce disease; also flukes (Disto- 



vmm licpaticum, D. magna). 

 Nematoda Numerous thread and round worms {Ascaris, TricJiO' 



cepludus, etc.). 

 Chsetopoda None. 



