in Mr. Rice on the Weight of a Cubic Inch of Water, [MAY, 
= three millionth parts of that bulk, its volume at certain tem- 
peratures will be as follows : 
At 60°0° = 113°519011 cubic inches 
64:0 = 113°519147 
66:0 = 113°519215 
66-4 = 113-519228 
67°0° = 113:519249 
68:0 = 113°519283 
To enable us to make the compensations for temperature and 
pressure, we must observe that at 
Grains, 
66°'a volume of water equal the ae weighs 28683-5766 
ll eat Roe cig ste acts vata teks ae 28682-4323 
Difference for 0-4° therm.. 1:1443 
And for 0:1° .. 22.8.4. sige BB 
The volume of air displaced by the sphere at 
Grains. 
67° and 29:74 weighs 33°87528 
67 and 30:00 ...... 34:17156 
68 and 30°13 ...... 3425217 
Difference between the first and third weights = 0- 3769, between 
the first and second 0°3063 gr. 
Supposing the weight, or equipoise to the sphere in air, to 
contain 13°5 cubic inches, it will displace at 
Grains, 
67° and 29-74 a volume of air rire aps 4-0285 
BB. anid BO bSiiy. saan Lise ahgiow. ot 4:0733 
60 and 30°00 .:... we Rade OIF «tod 4-1200 
The weight will thus become of actually less value as a coun- 
terpoise at 68° and 30> 13, or at 67° and 29-74, than at 60° and 
30; but its nominal value remains constant: in the first case, 
therefore, 0:0915, and in the second 0:0467, is to besubtracted, 
Sir George found the weight of the sphere i i water at 
Grains, 
66:0° by the: first trialiiin, oie; ages eee. Ta AG BaOE 
66°1 by the second trial = 49-8100 
— 00:2866 for 01° 
49°5234 ° 
66-4 by the third trial.. = 49:5500 
— 1:1464 for 0:4° ; 
Jabois 48-4036 
Mean, 2.1.5.6. 49:2590 
