Liberia <- 



course their sufferings from this parasite are observable when 

 any one who is infected with it reaches the Liberian coast towns. 

 The Guinea worm (Filaria medinensis) in one of its stages of 

 microscopic smallness enters the body of a minute water 

 crustacean Cyclops quadricorms which acts as an intermediary 

 host for the worm embryos. From the human stomach the 



381. MAKKSON KRl MAN'S FACE, FORKHKA1J, AN U TEMJ'l.KS 



embryo of the Guinea worm penetrates in some way to the 

 blood, and then passes into the subcutaneous tissues. Here, 

 under the surface of the skin, it develops till it reaches maturity. 

 This parasitic worm found in the human body is only 

 of the female sex. " It is supposed " (writes Dr. J. Graham 

 Forbes) ' " that the minute female embryo of this worm is 



1 In a report published by the African Society, March, 1905. 



982 



