EDUARD UHLENHUTH 



317 



approached, tetanic convulsions ceased, and after metamorphosis all 

 larvae were free from it. 



Besides the tetanic convulsions the other symptoms of tetany were 

 also present in all animals; the legs and feet became permanently 

 twisted and contracted and the entire body assumed the shape char- 



I I M M M I I I M 1 1 1 11! ' 



• be,ginnin^ of ibymus |e,e(ling 



• f\rs] animal mdamorphoseci 

 ^ last » ., 



o 17- 20']( convulsions of posterior part of body 





77 V V 



f^fSl 



Qbk!cl<pnz: 



lidlSfE 



^ 



m 



m 



m 



m'AJT.i 



\m 



3i^ 



Weeks 5 



ZO 25 30 35 40 



Fig. 1. Tetanic convulsions in a thymus-fed series of A. opacum (Curve I); 

 in a thymus-fed series, kept in Ca lactate (Curve II) ; and in a thymus-fed series, 

 kept in Mg lactate (Curve III). The ordinates indicate the percentage of ani- 

 mals showing tetanic convulsions at the time indicated on the abscissae. Con- 

 vulsions of the entire body and convulsions of the posterior portion of the body 

 alone are considered. ^ 



acteristic of tetanic animals. The limbs and most of the muscles 

 necessary for the movements of the animals became permanently 

 paralyzed. 



//. Thymus-Fed Series, Kept in Ca Lactate {Fig. 1, Curve 11).^ 

 Seven larvae of Amhy stoma opacum were used, one of which died soon 

 after the experiment had been started. Several days after the thy- 



