112 Scientific Intelligence. 
Assuming all the proteine compounds ingested in these cases to 
be assimilated, and transformed without waste into an equal 
weight of muscle, 1 grm. of muscle, giving by its disintegration 
1848 meterkilogs. of force (Frankland, Phil. Mag., xxxil, 188 [and 
this Jour., xlii, 407]), the muscle so formed would in each case 
ive— 
143,335 
the latter quantity being less by 16,677 meterkilogs, than the daily 
i in the work of the circulation and respiration, given 
A. B. 
Meterkilogs. Meterkilogs. 
146,842 
em). 
It might be objected that the prisoners live in a higher temper- 
ature than the subjects, observation on whose circulation and res- 
consequently is so much greater in the one case than it was (proba- 
bly) in the other, that the effect of this difference of temperature 
is probably neutralized at least by these attendant conditions. 
But if it be admitted that the difference of 10 per cent can be so 
accounted for, the source of external work must be looked for 
quired to furnish the internal work alone. The proportions of 
proteine compounds given in the Table are above the truth, in 
many ¢a 
an obstacle in the way of using the electric light, except for lecture 
rooms and a few other purposes. But the recent improvements in 
i d thermo-electric 
batteries have put in our. power to command the services of this 
beautiful illuminating agent on any desirable scale of magni- 
ae. 
In order to examine the question of cost intelligently, let us re 
i n measure 
fer both electrical and illuminating effects to the com 
is equal tothe raising of a weight not exceeding thirteen 
one foot high in that time. I have arrived at a simi: 
a reducti f recorded experiments ma i 
myself, and others. I am satisfied that, wh 
ler proper 
ceed 15.foot-pounds per minute 
of light the power required will be greater. 
