342 BOARD OF AGRICULTURE. 



no reliable advice can be given as to the modes in which 

 the spreading of the disease can be best prevented. It is 

 most probable, however, that the eggs are hatched in water 

 or moist earth, and that the young worms are swallowed di- 

 rectly by the hogs while drinking. 



Although this parasite probably does not live in the human 

 body in any stage of its growth, there can be no doubt but 

 that the pork and lard from hogs infested by them must be 

 unwholesome. That such diseased pork is constantly sold in 

 our markets is certain. 



The Human Bot-fly (^Dermatohia noxialis?'). 



In the last Report (page 95), it was mentioned that a 

 species of bot-fly lives in the larval state beneath the human 

 skin, forming painful tumors. But such instances had been 

 observed only in the tropical parts of Central and South 

 America. It is, therefore, of interest to record a similar case 

 in the United States. In this instance, a young woman, 

 twenty-two years old, residing at Meridian, Mississippi, was 

 the victim of the insect. The larv^, developed from eggs 

 deposited in the skin by the fly, caused great irritation and 

 pain in the sub-cutaneous tissues, resulting in large abscesses, 

 from which the mature larvae finally escaped. ^ 



I am indebted to Dr. Wm. B. Fletcher, of Indianapolis, 

 Ind., for a specimen of the larvae of the insect which was 

 taken from this patient and sent to him by Dr. Jas. Hughes, 

 who treated the case. Whether it be identical with the South 

 American species cannot be determined from the larvae alone. 



HENRY A. DYER. 



BY M. C. WELD, NEW YORK. 



It is certainly meet that the death of one, for many years 

 so actively interested in Connecticut Agriculture, and in the 

 Societies established for its improvement, should receive more 

 than a passing notice in this volume. Besides, the history of 

 improved Agriculture in this state, which these reports should 



