260 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



ONE-HALF SATrRATEl) SOLUTION OF ALUM, WITH 10 PKR CENT FORMALIN. 



At the end of the tirst week one human specimen showed a small 

 increase, another a slight diminution in weight; among the mammals, 

 two adults and two 3'oung showed a very slight increase, the rest of 

 the mammals and all the birds a decrease in the original weight. 

 Apparentl}- there was an initial rise, but it was slight and of short 



102 per cent, p- 



90 per cent. 



80 per cent. 



-- -■•A "^ - -- 1 





■34i 



70 per cent 



t 



Z± 



..: IIL_. 



u 



Afammals, adult, — 



Mammal.s, young, ■ — • 



Fig. 10. 



Human, adult, 



Bird.s. adult, 



-Curves .sHowi.VG changes i\ bhain weights in one-half saturated sui.itiox of .\i.um, 

 WITH 10 per cent formalin. 



duration. T\w hniins of adult l)irds lost more than those of full-grown 

 mammals, and these lost more than the adult human ])rains. Brains 

 of young mammals lost more than those of full-grown. The ultimate 

 deticiency in weight Avas greater than in any of the simple formalin 

 solutions. 



ONE-THIKI) SATUKATKI) SOLUTION OF ALUM, WITH O PER CENT FORMALIN. 



This preservative influenced the weight in the various series of 

 specimens much as did the one-half saturated alum solutions, only the 

 loss of weiglit was on the whole still slightly smaller. The one adult 

 human brain preserved in this liquid showed a slight initial increase, 

 but in the mammal and ])ird brains there was at the end of a week in 



