Miscellaneous Intelligence. 141 
ubstances experimented Pressure in Ibs. to Temperature, Fahr., 
upon. the square inch. at which it liquetied. 
Spermaceti, - 0 7,79 11 880 124° | 140° | 1765° 
ax, = - - 0 | 7,790 11,880 1485 | 1665 | 65 
Sulphur, -~— - 0 7,790 41, 235: | SSS ys 
Stearine, -  - o | 7790 | 11,880 | 158 | 155 165 
exceedingly rapid rotatory motion on it i ut to this clock-work 
frame it could be attached, or detached from it, instantly. This revolv- 
ing mass only about three inches wide, and four of them were 
mounted in frames a little differently. rst was mounted in 
the pinion to appear on the outside, so that it could be laid hold of, or 
grasped firmly in the hand, if the pinion were not touched, while the 
tion. B 
this modification of the gyroscope, the author afforded to the audience 
i en- 
to turn it round either in his fingers, to the right hand or left, or up or 
down, or in his hands if he swung itround. So that the idea was irre- 
Which had a will of its own, and which alwa our will to 
Change its position. The second modification presented the mass sus- 
pended in a stout ring, which was furnished with projecting axles, like 
the ring of the gimbal. ‘These axles could be placed in a small frame 
of wood bushed with brass. ‘This smal! frame, when placed on a piece 
of smooth board, could be turned freely round by turning the piece of 
rd on which it rested as long as the gyroscope was not revolving, 
tlon being sufficie 
fric 
ent to cause the one to turn with the other; but, 
* See this Journal, xv, 263. 
