NEMATHELMINTHES 



97 



Treatment of Nematosis. — A diet rich in carbohydrates is 

 said to lessen the damage to the liver, kidneys and adrenals that 

 frequently ensues from the use of carbon tetrachloride in hookworm 

 disease. Hexylresorcinol is also effective. (Science, Aug. 1 8, 193 1.) 



In certain pioneer studies, T. B. Johnson and W. W. Hodge, in 

 May and June, 1913, determined the phenol coefficients of resorcinol. 



Vulva — 

 Vat^tna 



Bipolar gang/ion cells-^- 

 Nerve -rinq 

 Lateral chord — ■■- 



Ovum in ejaculatory duct 



Ovary with c(^cjS In 



process of development 



Amphidiol nerve 



Excretory pore 



Coudol gland 



p^ £(^ in process of fertilization 



— Spermatozoa 



£<jq with shell 



Uterine wall 



C/vette 



Nucleus of 

 Salivary glond 

 £soptio^us- 



Cardia — 

 Demonian system 



Rectum 



i' Renette duct 



— Renette CG/I 



^%@S?*^^^ Intestine 



— Spinneret 



Fig. 39. Marine free living Nematode, Metoncholaimiis pristiurus, female. Courtesy 

 of N. A. Cobb. (Drawn by J. Danforth.) 



ethyl resorcinol and propyl resorcinol, three of the four points on the 

 curve. A brief account of the work of Professor Hodge was pub- 

 lished in 1913, Jour. Amer. Chem. Soc, vol. 2S-> P- ioi4> but it was 

 not until 1921, Jour. Amer. Chem. Soc, vol. 43, pp. 348-360, that 

 Hodge's curve with one more point added was published. 



