CESTODA 127 



that every dog should be periodically physicked, and that all 

 the excreta, tapeworms included, should be buried at a con- 

 siderable depth in the soil. I advised, however, that in place 

 of burying the excreta, they should, in all cases, be burnt. I 

 had, indeed, long previously urged this measure (in a paper 

 " on the Sclerostoma causing the gape-disease of fowls," 

 published in 1861), with the view of lessening the prevalence of 

 entozoa in general, whether of man or animals. The rule I 

 suggested stood as follows : All entozoa which are not preserved 

 for scientific investigation or experiment should be thoroughly 

 destroyed by fire, when practicable, and under no circumstances 

 ivhatever should they be thrown aside as harmless refuse. As 

 an additional security I recommended that boiling hot water 

 be occasionally thrown over the floor of all kennels where dogs 

 are kept. In this way not only would the escaped tapeworms 

 be effectually destroyed, but also their eggs and egg-contents, 

 including the six-hooked embryos. These measures were again 

 advocated at the Cambridge Meeting of the British Association 

 in 1862, and also more fully in a paper communicated to the 

 Zoological Society, during the autumn of the same year (' Pro- 

 ceedings,' vol. xxx, pt. 3, pp. 288, 315). 



As the scope and tendency of this work preclude the textual 

 admission of clinical details, I must limit my remaining obser- 

 vations to the pathology of hydatid disease. At very great 

 labor, pursued at distant intervals during a period of ten years, 

 I sought to ascertain the probable extent and fatality of this 

 form of parasitism in England, by going over such evidence as 

 our pathological museums might supply. Although, from a sta- 

 tistical point of view, the investigation could hardly be expected 

 to yield any very striking results; yet clinically viewed the 

 study was most instructive. The evidence which I thus pro- 

 cured of numerous slow and painful deaths from echinococcus 

 disease, further stimulated me to place a summary of the facts 

 on record. Physicians, surgeons, scientific pathologists, and 

 veterinary practitioners are alike interested in the study of 

 hydatid disease ; and I had not proceeded far in my careful 

 investigation before it became evident to me that very great 

 practical results would ensue if, in this kind of effort, the prin- 

 ciple of division of labor had full play. At all events, within 

 these museums lie concealed a mass of pathological data which, 

 although well within reach, have not been utilised to the extent 

 they ought to have been. 



