382 
]ME. T. GEAHAM ON LIQUID TEANSPIEATION 
The increase of the transpiration-time of an alcohol, ether, and acid, as each rises in 
its series, may be connected with the increasing weight of their molecule. 
Acetone. 
The transpiration of this liquid is remarkably rapid. It is also greatly retarded by 
the addition of water. The time will be found to rise from OTOl, that of anhydrous 
acetone, to 1’604, the time of the 12-hydrate, taking the equivalent of acetone as 
Cg Hg O2, or of the 6-hydrate with the equivalent C3 H3 O. 
Table XI. — Transpiration of Acetone, at 20°, by Capillary C. 
(Transpiration-time of water, 348 seconds.) 
AA^ater added to 100 acetone 
(CeHeO,). 
AVater, 
per cent. 
Transpm 
In seconds. 
ition-time. 
Water= 1. 
Specific gravity, 
at 15°. 
0 
0 
139-6 
0-401 
-7943 
15-51 ... 
1 
eq. 
13-42 
212-5 
0-610 
-8384 
31-03 ... 
O 
eq-!. 
23-68 
283-5 
0-814 
-8604 
46-55 ... 
3 
31-76 
355-5 
1-021 
-8850 
62-06 ... 
4 
38-29 
457 
1-313 
-8990 
77-58 ... 
5 
5? 
43-68 
464 
1-333 
-9123 
85-34 ... 
5-5 
46-04 
469 
1-347 
•9173 
93-10 ... 
6 
48-21 
482 
1-385 
•9219 
100 
50-00 
500 
1-436 
•9251 
108-61 ... 
7 
>> 
52-06 
515-5 
1-479 
•9300 
124-13 ... 
8 
65-33 
531-5 
1-527 
•9320 
139-65 ... 
9 
3? 
57-85 
537-7 
1-543 
•9413 
155-16 ... 
10 
33 
60-81 
552-7 
1-586 
•9468 
170-67 ... 
11 
3’ 
63-05 
555-5 
1-594 
•9504 
186-18 ... 
12 
33 
65-05 
558-5 
1-604 ' 
•9526 
201-71 ... 
13 
33 
66-85 
556-5 
1-599 
•9563 
217-24 ... 
14 
33 
68-41 
557 
1-600 
•9588 
232-75 ... 
15 
33 
69-94 
.553-5 
1-590 
•9608 
248-27 ... 
16 
33 
71-28 
549 
1-577 
•9632 
263-79 ... 
17 
33 
72-23 
547 
1-571 
•9649 
279-31 ... 
18 
33 
73-63 
546 
1-568 
•9662 
294-82 ... 
19 
33 
74-67 
539-5 
1-550 
•9676 
372-24 ... 
24 
33 
78-82 
519 
1-491 
•9736 
The transpiration-time of acetone attains a maximum at what is represented in the 
Table as the compound Avith 12 equivalents of water. The time is nearly stationary for 
some distance on either side of that point, the range from 10 to 15 equivalents of Avater 
being 1‘586 to 1‘590, Avith 1‘604 as a maximum for the intermediate twelfth equivalent. 
Glycerine. 
This liquid is too viscid in a state of purity to be transpired by means of the bulb 
and capillaries employed in these experiments. The observations to be recorded AA*ere 
confined to diluted solutions of glycerine approaching in composition to the 18-hydi’ate, 
Cg Hg Og+18HO. It Avas imagined that glycerine as a triatomic alcohol might affect 
combination with water in the proportion named. 
