SiLBERBERG : STIMULATION OF STORAGE TISSUES 



499 



The gas in every flask was analyzed twice and the average of the 

 two results taken. Between each analysis hydrochloric acid was 

 run in to remove all traces of the potassium hydroxide, after w^hich 

 the apparatus was rinsed three times with distilled water. 



Stimulated 



Control 



Dll-F. IN C C. OF 



CO2 IN CONTROL 



AND STIMULATED, 



-f = control more 

 — ^ control less 



Strength of 

 ZnSO^ sol. 



Orig^inal 

 per cent, 



Ot CO3 



Per cent, of 

 CO 2 cor- 

 rected for 



vol. of flask 



Actual 



amount of 



CO^ in c.c. 



Original 



per cent. 



of COj 



Actual 

 amount of 

 CO2 in c.c. 



N 



2 



N- 



12 



i6 



JV 

 24 



32 



12.01 

 7.61 



12.40 : 



10.41 



8.59 



16,35 

 16.90 



17.87 

 17.80 

 16.90 



1 

 1 



16.12 



18.50 



18.14 

 20.96 



11.46 



7.27 



11.84 



9-94 

 8.21 



15.64 

 19.15 



20.26 

 20.18 

 19.18 



15-43 

 17.67 



1 

 1 

 1 



17-33 

 23.76 



9.46 

 6.29 



+ 



10.05 



8.44 

 6.97 



1325 



16.26 



17.19 



17-13 



16.27 



13.07 

 15.00 



14.71 

 20.16 



16.93 

 12.63 



13-48 



10.67 



9.52 



16.67 

 16.67 



15.44 



17-54 

 16. II 



16. II 

 21.03 



17.54 

 21.03 



15-93 

 11.89 



12.68 



10.14 



8.96 



15.69 

 15.69 



14-53 

 16.50 



15.16 



15.16 

 19.79 



16.50 

 19.79 



+ 6.47 

 -f 5.60 



+ 2.63 

 + 1.70 

 + 1.99 



4 



+ 2.44 



O.S7 



—2.66 

 —0.63 

 — I. II 



+2.09 



+ 4-79 



+ 1-79 

 — 0.37 



It may be of interest to describe the method of analysis and 

 the method of calculating results. A sample of gas was drawn 

 into the tube of the apparatus and measured. It measured, for 

 example, 51.10 c.mm., the correction having been made for the 

 water present in the tube. Then a ten per cent, solution of potas- 

 sium hydroxide was drawn in, run back and forth in the tube sev- 

 eral times, and the remaining gas measured. In this case it was 

 43.05 c.mm., the difference between the two amounts, 8.05 c.mm., 

 or 15.75 per cent, being the amount of carbon dioxide present in 

 the sample. In the next analysis, 16.5 per cent, was the result 

 gotten, the average being 16.125 per cent. This experiment was 

 performed in flask II., the volume of which was 90.306 c.c. ^ But 

 9.236 c.c. of the flask was occupied by the twelve pieces of potato 

 20 mm. long and 7 mm. in diameter. Therefore the complete 

 amount of gas present in the flask was 81.07 c.c, 16.125 per cent. 

 of which, or 1^.072 c.c, was carbon dioxide. The volume of the 



