lOO 
REPORT—1854. 
at in the other testings, which were then performed as rapidly as possible, 
to prevent the absorption of carbonic acid from the atmosphere. It was 
found by numerous trials, that this adoption of a standard—and com¬ 
pared with the method of M. Bnussiugault somewhat more permanent point 
of coloration—gave us greater uniformity of result in duplicate experiments 
with liquids of known strength, than that of taking the point of first perfect 
diffusion of blue colour throughout the liquid, as adopted by Boussingault; 
and the test-liquors were therefore arranged accordingly. It. should he 
added, that the rapid diffusion of the alkali through the liquid was favoured 
by increasing its specific gravity by the addition of neutral sulphate of 
potash as employed by M. IJoussingault for that purpose. 
Table II. 
Method 2.—By the single distillation of small quantities of water (with 
alkali), and testing successive portions of the distillate according to 
Boussingault. 
Year 1853. 
Months. 
April 
May 
June 
July 
August ...• 
September 
October... 
November 
December 
a 
a 
| 
1 
A 
Ounces 
of 
rain- 
water. 
Scptem* of Ammonia al 1° In portion* 
of distillate. 
Ammonia 
ner j 
million | 
rain¬ 
water. 
l«l 
tenth. 
and 
tenth, 
or let 
tilth. 
3rd 
tenth. 
tth 
tenth, 
or 2nd 
firth. 
5th 
tenth. 
6th 
tenth, 
or 3rd 
fifth. 
Total. 
J l 
30 
4 0 
10 
50 
jll-817 
l 2 
30 
40 
10 
50 
r i 
30 
•f* 
4-5 
20 
10 
7-5 
1 
60 
7'0 
30 
20 
20 
140 
1 1-225 
L 3 
60 
80 
4 0 
2-0 
20 
16 0 
J a 
1 
60 
75 
2-5 
1-5 
1-5 
10 
HO 
1144 
1 
60 
6 0 
2-5 
20 
10 
10 
11*5 
0-9.19 
1 
60 
4-5 
1-5 
15 
10 
1-0 
0-5 
10-0 
.0-851; 
2 
60 
5 0 
175 
15 
1-5 
10 
1075 
3 
60 
4-75 
2:0 
15 
1-25 
10 
10-5 
1 
60 
4-5 
20 
10 
0-5 
00 
80 
2 
60 
4-5 
1-5 
1-0 
1-5 
1 •*; 
10 0 
.0735' 
3 
60 
4-75 
20 
1-5 
HI 
0-5 
075 
4 
60 
5 - 0 
175 
10 
0-5 
0-5 
0-5 
875 
5 
60 
4-75 
15 
10 
075 
85 
60 
4-75 
1-5 
0-75 
0-5 
0-5 
80 
.0 688 
2 
60 
4-5 
2-25 
1-5 
075 
075 
075 
60 
4 0 
1 25 
10 
0-75 
05 
75 
* 
60 
60 
50 
6 0 
1-5 
20 
1 25 
125 
0-75 
075 
0-5 
0-5 
0-0 
10-5 
.0-8«3 
f ? 
60 
60 
1 25 
15 
05 
100 
60 
12-75 
325 
2-0 
10 
10 
200 
JH514 
l| 2 
1,0 
12-5 
3-5 
15 
10 
10 
105 
lW.s u? t0 . , figures of the Table it may be mentioned, that M- 
Boussmgault found that each successive tenth of the distillate contained 
nmml n- a a,nn ‘ 0I “ a °! J of its Predecessor, and that, the whole appreciable 
JET,; 8 ° nemlly , ° ontaine, l the first four or five tenths. It is seen 
fractional l,J U *' ! proportional diminution of the ammonia in the 
aUh.m"h wc S J : ’V 0 * " di bolIie °«*t iu the figures of our Table; and 
n "° Ca “ tlie of this actual relationship w » 
* * Pritii > j’ ct »* would seem that in practice 
f r N '"' c an we be much surprised at the difference in 
i ummoniil "idicated in the “total” column in cases of duph- 
cati. analyses, when we remember that each total is the sum of the amounts 
