32 Prof. Henry on the Conservation of Force. 
haps new. These experiments were greatly facilitated by its 
use. The portions mand m’ are 11. 
removable at pleasure. To con- 
struct a mould for a new ball, it is _, 
Chea 
spared : an important considera- ae 
ation, where new forms of balls must be made by the dozen. 
Troy, February, 1860. 
Art. IV.—On the Conservation of Force; by Prof. JosePpH 
Henry, Smithsonian Institution.* 
_ [THe following remarks upon the conservation of force, par- 
ticularly in relation to organic matter, by Professor Henry, Sec- 
retary of the Smithsonian Institution, wiil be interesting to those 
who have given attention to articles on the same subject, which 
have already appeared in this Journal. 
hey are extracted from the Agricultural Report of the Pat- 
ent Office for 1857 
gen 
ing no less than 84 atoms of carbon, oxygen, and hydrogen. — 
he organic molecules, or atoms, as they are called, are built 
up under the influence of the vital principle of inferior groups of | 
simple elements. These organic oleh i 
rocess. After they are once formed in this way, they may be } 
* Communicated by Prof. Henry. j 
