VARIATION IN AMOUNT OF AMMONIA IN WATER, 
237 
TABLE No. 4. 
Five Bottles each Urine and Horse Pond Waters. 
Temperature 
(Fahrenheit). 
- 
- 
Horse Pond. 
Urine and Distilled Water. 
Morning. 
Evening. 
Nos. 
Date. 
Free N1I 3 . 
Alb NH 3 . 
Free NH 3 . 
Alb. NH S . 
70° 
72° 
1 
Nov. 3 
•35 
•08 
•09 
*12 
74° 
7G° 
2 
„ 7 
•20 
•08 
T8 
T2 
74° 
76° 
3 
„ 11 
*05 
•08 
•18 
*12 
74° 
76° 
4 
„ 13 
*05 
■08 
T9 
•11 
75° 
75° 
5 
„ 14 
•03 
•07 
*21 
T2 
Note. — Rain on 11th November. 
In all cases where mixtures gave such large amounts of ammonia as to be unwork- 
able, they were, before distilling, diluted with the requisite quantity of distilled water 
to bring the ammonia down to working limits. 
The second of the above series (urine and distilled water) did not contain enough 
bottles ; the amount of free ammonia increased from ‘09 to '21 in eleven days. If the 
experiment could have been carried on longer, a larger amount of ammonia might have 
been set free. 
TABLE No. 5. 
Five Bottles each Urine and Horse Pond Water. 
Temperature* 
(Fahrenheit) . 
- 
- 
Ilorse Pond. 
Urine and Distilled Water. 
Morning. 
Evening. 
Nos. 
Date. 
Free N1I 3 . 
Alb. NH 3 . 
Free NH 3 . 
Alb. NH 3 . 
76° 
76° 
1 
fej | 
o 
* 
10 
•60 
*18 
‘56 
*56 
72° 
75° 
2 
21 
*01 
T3 
1*20 
*39 
74° 
76° 
3 
22 
•01 
T3 
1-28 
*35 
72° 
72° 
4 
24 
•01 
•11 
2 ‘56 
*29 
66° 
69° 
5 
27 
*01 
•11 
1*60 
•32 
Note, — Rain on lltli November; none since. 
In the second series containing urine, the gradual increase and then decrease of 
free ammonia is very marked, the decrease of albuminoid ammonia going on very 
regularly. 
TABLE No. 6. 
Twelve Bottles Garden Tank Water and Urine. 
Temperature (Fahrenheit). 
Nos. 
Date. 
Free NII 3 . 
Alb. NH 8 . 
Morning. 
Evening. 
72° 
77° 
1 
Nov. 
24 
*27 
•27 
66° 
69° 
2 
27 
•32 
T8 
66° 
68° 
3 
29 
•20 
•18 
67° 
68° 
4 
30 
•20 
*18 
68° 
68° 
5 
Dec. 
1 
•16 
T5 
66° 
71° 
6 
4 
*28 
*36 
73° 
73° 
7 
6 
•36 
*40 
76° 
77° 
8 
n 
l 
•24 
*27 
77° 
78° 
9 
8 
*17 
*15 
73*5° 
75° 
10 
11 
•16 
T4 
77° 
76° 
11 
12 
T4 
•13 
71-5° 
72° 
12 
13 
•13 
TO 
Note.— No rain from the 11th November, 
If only the last two bottles of the above had been examined, the impression con- 
veyed would have been very different to that from the earlier and intermediate ones — 
hence a very seriously contaminated water (if the ammonia tests be solely relied upon) 
might, if a few weeks in transit to the examiner, be passed as a fair or even good 
water. 
