644 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



TABLE VIII. 



Temp. 15.5. Silver Nitrate, N. 

 Potassium Chromate, f-^. 



TABLE IX. 



Temp. 16.7. Silver Nitrate, N. 

 Potassium Chromate, f^. 



TABLE X. 



Temp. 16.7. Silver Nitrate, N. 

 Potassium Chromate, f^. 



TABLE XL 



Temp. 17.3. Silver Nitrate, N. 



Potassium Chromate, y^j,. 



