470 



METEOROLOGICAL OBSERVATIONS. 



U. S. SHIP YINCENNES. 

 HILO BAY, ISLAND OF HAWAII. 



OBSERVATORY. 



INSTRUMENTS USED ON SHORE. 



Barometer. 



Attached thermometer. 



Thermometer, with bulb covered with lampblack. 



black wool, 

 uncovered. 



Temperature of water, and thermometer at mast-head, observed on board U. S. Ship Vincennes. 

 Hygrometer. 



