APPENDIX OX TREMATODA AND NEMATODA 755 



Filariasis. Dutcher and Whitmarsh have cultivated from the 

 blood and from the exudation fluids of cases of filariasis (elephanti- 

 asis, lymphangitis, etc.), in about sixteen cases, a bacillus resembling 

 B. subtil is. Controls were negative. They propose the name Bacillus 

 lymphangiticus for this organism, and they believe it to be the cause 

 of the diseases grouped under the designation " filariasis." 



Oncocerca volvulus. Unsheathed embryos (indistinguishable from 

 those taken from the uterus of this worm) have been found in lymph- 

 atic glands and in the blood (if considerable pressure is used so as 

 to squeeze out lymph at the time of taking the finger blood, otherwise 

 none occurs in the specimens). The measurements in dried films 

 are : Nerve ring 237 per cent, of length ; Gi cell 69-6 per cent. ; 

 end of last tail cell 96-3 per cent; total length 274-3 /A. 



Strongyloides stercoralis. Pathology : They occur in the wall 

 of the intestine and may be associated with ulceration. They also 

 occur in lymphatics and blood-vessels. 



