CASELLA-MILLER DEEP-SEA THERMOMETER. 899 



portion of bulbs. This induced quicker action, but still slower than a 

 bath of 350 ; and at last, as in former cases, the mercury apparently 

 ceased to fall at 35°. 



This experiment is put in simply for the purpose of guarding other 

 experimenters against the mistake. 

 The standard, as in last year's tests, did not vary from 32o.05. 

 Kespectfully, 



L. A. BEAEDSLEE, 

 Commander^ United States Navy. 



