BBAIXS AND BRATN PRESERVATIVES— HRDLICKA. 



259 



and this gradually progressed. The bird brains showed greater loss 

 than those of niannnals. On the whole the effects of the solution 

 resemble those of the alum-formalin com})inations. 



ONE-HALF SATURATED SOLUTION OF ALUM, WITH O PER CENT FORMALIN. 



The various series of specimens in this solution behaved in the same 

 way as those in one-half saturated solution of alum with 10 per cent 





I I I I 



« 



80 percent 





■\\-v- 



"\ 



Mammals, adult, Birds, adult Mammals, young, — • — . — . — . 



Fig. 9. — Curves .showing changes in brain weights in one-half saturated solution of alum, 



with 5 per cent formalin. 



formalin, except that the loss was throughout slightly less. An 

 increased amount of formalin with this alum .solution favored some- 

 what a loss of weight of the specimens. 



