243 



The two posterior processes to which I have referred were 

 apparently of the same substance as the outer tunic. They 

 were broadly conical at the base, which was about i of their 

 total length ; the outer t were very much finer and narrower, 

 and covered with minute dots, which, Mr. Haswell says, were 

 probably minute spines. In the interior of the base of each 

 was a very strange mushroom-shaped object, of which Mr. 

 Haswell says he does not know its precise nature, though he 

 knows it to be as I described in my letter to him. When I 

 sketched the process, or horn, I noted the mushroom-shaped 

 object as coloured metallic green, but if I recollect right it was 

 of the same bright purple as the nerve ganglion, etc., when the 

 animal v^as first caught. 



I have not been able to find any detailed account of the 

 8alpae in the (Society's Library, but in the Proceedings of 

 the lioston Society of Natural History, Vol. XI., p. 17,^ is a 

 detailed description, with woodcuts, of Salim Cahotti, by 

 Alexr. Agassiz. This is found south of Cape Cod, and very 

 closely resembles the one I caught, and the description and 

 investigation into the connection of the chain forms are highly 

 interesting. 



CANCER IN CATTLE. 



[Paper read before the Royal Society of Tasmania August 11th 1884, 



By H. A. Perkins M.D., Edin.] 



The subject of disease in cattle is one which cannot fail to interest 

 all sections of the community, as well the stockowner who provides 

 for the market as the inhabitants of towns who consume the meat, 

 and to whose advantage it must be to obtain the most wholesome 

 supply of food. At a time when cancer among human beings has 

 *been said to be on the increase, the nature of such disease among 

 cattle not only merits attention at the hands of veterinary surgeons, 

 but furnishes material for speculation to medical men. For in these 

 days of minute organic life, of micrococci and bacilli, at a time when 

 so many diseases find advocates for their origin and development in 

 the theory of contagious living organisms, it might be a fair deduc- 

 tion to draw that the disease in man derived its prevalence and 

 potency from living spores transmitted from the diseased meat which 

 we colonists so unsparingly consume. The more especially as 

 specimens of such disease called cancer in cattle areneither few nor 

 hard to find, and the description of Osteo Sarcoma which I am about 

 to give, is based on examples obtained in Tasmania. *' The time has 



[^statistics of last 14 years show that though there has been an increase in the number 

 of deaths from this cause, yet that the population has increased in nearly the 

 ratio.] 



