Milk.) Deposit.| of Ash. |of Ash.| P,O, | CaO 
4 | 0°4457 | 0-0310 | 6°94 | 0:0142 Be 
6 | 1:4041 | 0-1001 | 7°13 | 0:0423 | 0-0444 
9 | 0°6275 | 0:0618 | 9°85 | 0:0286 | 0:0294 
10 | 0°5305 | 0-:0431 | 8:12 | 0°0192 | 0-0194 
12 | 1-5251| 0-1157 | 7-59 | 0-0549 
13 | 1-0551 | 0:0913 | 8°65 | 0-0391 
15 | 0-5594 | 0-0452 | 8:09 | 0:0202 ae 
22 | 0-9015 | 0-0702 | 7°68 | 0:0288 | 0:0274 
23 | 1:0162 |) 0-0880. | 8:29 | 0:0383 | 0-0349 
NATURE OF DEPOSIT OBTAINED FROM MILK. 165 
Table VI. 
Percentages of Ash, P,O;, and CaO in Deposits from Milk. 
Weight of, Weight |Percent.|Weight of|Weight of 
Percent.| Percent. 
of P,O,| of CaO 
3°185 
3°01 | 3°16 
4:56 | 4:68 
3°61 | 3:68 
334 
3°70 
3°61 sa 
3°21 | 3:04 
3°61 | 3°29 
Sition as is shown by the following figures giving the per- 
centages of P.O; and CaO calculated on the weight of ash 
instead of on the weight of the whole deposit. 
Table VII. 
Percentages of P,O; and CaO in Ashes of Deposits. 
Milk. Percent. P,O, 
4 45°8 
6 42°3 
9 46°3 
10 44°6 
12 44-0 
13 42-8 
15 44-7 
22 41-1 
23 43°95 
Percent. CaO 
P,0,/CaO 
0-952 
0-952 
0-991 
1:05 
1-10 
The average percentage of P.O; in the ash of the deposit 
is thus 43°9 and the average percentage of CaO is 43°1. 
As the above figures for CaO and P.O; were obtained 
from the ash of the deposit, there is a possibility that the 
values for P.O; may be low owing to the tendency of the 
phosphorus of organic compounds to volatilise during 
ignition. A comparison of the two following estimations 
shows, however, that the loss of phosphorus in the present 
case is small. 
The first of these results was obtained on 
