182 



PROCEEDINGS OF THE AMERICAN ACADEMY 



TABLE XL. — Fourth Series. — Preliminary* 

 March 24, 1878. Jacket 5°.4 to 8° 2. Air about 6° C. 



TABLE XLI. — Fifth Series. — Preliminary. 

 March 24, 1878. Jacket 5°.4 to 8°.4. Air about 6° C. 



* The first part of the experiments were lost, as the pen of the chronograph did not work. 



