15 



NOVEMBER 



DECEMBER 



59 



6-4 



I I II I 

 FORMALDEHY 



SUMMARY N. s 1-61 



DE PLACED IN MILK IMMEDIATELY BEFORE TAKING 



FORE PERIOD PRESERVATIVE PERIOD AFTER PERIOD 



LEGEND '^^%% GH ^/^=^ 



FIG. 3. Daily and average body weights for Scries IX, Nos. 1 to 6, and summary. 

 [Cir. 42] 



