306 The Rev. Dr. Rosinson on the Effect of Heat in lessening the 
CSCO wt ea SOA ot: Seen 20R0 
566 Qin ce Sok) See ea RON ee. Rae ee 124°.0 
HOSen ils SOR REQ eter ee, Mes ile 130°.0 
BERD. of ce Re Dein Beh. Lethe oes fey 3020 
5OO.8i. ky tuck ue eae EC. Ck ay le Se laa 0 
BS AiGiy at etic ad RY eee ALLS a eee a ROO 20 
BRSIG woos Joka Hea GIR sult) or ea he SO 
S700. he su ee eee CSO ee? rey eal orn 
BT Bio dt Se Ul er dlr ASTRON ge eo te oS alee 
FASO. * cckee oS os EA ease, se) ORD 
BSSy 2 A abe cree eee es roe ei bog 
Mean,* e¢= 567.6 . . - Mean, y= 245. .. . Mean, r= 15574 
The probable error of the mean e is here = = 5.3. 
According to this, a rise of temperature, amounting to 74°.2, lessens the elec- 
trolytic intensity of water by 31.3, equivalent to 42.19 for 100°. Now, as to this 
effect being real, and not error of observation, I would remark that the probable 
error of the difference between the two values of e = + 6.2; less than a fifth of 
the difference above. Therefore it can easily be computed that it is as 10,000 to 
1 that the error of observation is not so great. From the equation (¢) we 
infer that 100° lessens the affinity of hydrogen and oxygen 21.1. 
I afterwards got a better steam arrangement, and obtained 
C= 54, i Oe se TOO 
SOOM ee nn va a oA OO pres we ee OOe 
AQIS E ieee ee ee ee (Sp eee ve et rae eee) see) 
53QOe ce tas hace Mie Olt. a ee ot ee, oy POU 
DOO ce ee oe eg ee MOE oa) ere oe hen en ese Olle 
AGO A Se ee AAO Moke lis eee ese MeO 
HOLM ee eke ee OL Oe te ee ee meen) 
HOGG ee ee ae) eer ane) OOS a eereray ene Ozired 
DACA Se, od) erg See We ae eee eee 02 35 
* The last six were obtained on a different day; and this mean is deduced from the separate 
- 6 . . . 
means, giving each its probable weight. 
