332 R. Bunsen on the Washing of Precipitates. 
Tn transferring with 25 cub. centims. of water .-....------ 8 
For the first addition of 25 cub. centims. to run through __. 5 
For the second addition of 25 cub. centims. to run through. 5 
In draining the precipitate 3 
Time required 21 
Weight of precipitate 0°2435 orm, 
Volume of wash-water 72 cub. centims. 
Pressure 0°593 meter. 
IX. 
In transferring with 15 cub. centims. of water and pared q! 
ing it to run through _- 
For a single addition to run through 3 
| draining the precipitate oe 
wae required sf 12 
Weight of precipitate 0°2439 orm. 
Volume of wash-water 41 cub. centims. 
Pressure 0°572 meter. 
= 
In transferring the precipitate with 13 cub. centims. of water, 5 
For a single addition of water (26 cub, cent.) to run through, 8 
In draining the precipitate _.......... 02.2.2. -2.-2+-28 I 
eM SOUNO oc oi, one ls 14 
Weight of precipitate 0°2439 grm. 
Volume of wash-water 39 cub. centims. 
Pressure __.0°530 meter. 
In washing, by means of decantation, in the ordinary manner, 
the amounts of chromium sesquioxyd found were as follows:-— 
III. 0°2452 00 : 
TV.0248 .“¢ 10 « “ roosgooos Patt 
_ By the use of the pump :— 
grm. 
IT. 0°2458, after 5 decantations, washed to the sobao part. 
; “ 7 “ “ soot part. 
VI. 0-2434 ae | 66 ‘“ 
VIL 02432 « ; 
VIII. 0-2435 i . : 
TX. 02489 « 1 aaditi 
 &. 024389 ae ae of water. 
3 “ “c 
