470 
BEES AND BEE-KEEPING. 
represent, as seen from above, parts of a larger and 
smaller can, with diameters iSin.and I2in. respectively; 
then standard combs, rotating within the cages, will 
necessarily have radius-distances of which the lesser 
will be about one-third of the greater. Now', centrifugal 
force, with the same number of revolutions in a given 
time, varies as the distance from the centre, as shown 
at B, where the ball i (attached, like its companions, 
by a wire, to a revolving frame) does not move from 
its position, because its distance from the centre is o ; 
Fig. 114.— Diagrams Illustrating the Principles of the Extractor. 
A— c, Centre of Rotation, or Spindle ; gM, klm, Cans ; 'ca, eh, &c., Lines of Force. 
B, Apparatus to prove that Centrifugal Force varies as the Radius-distance — 
p, Pulley ; fr, Frame in Rotation ; b, Balance- weight ; 1, 2, 3, 4, 5, Weights 
Rotating. 
whereas 2, 3, 4 and 5 fly off with constantly increasing 
energy. It therefore follows that, wdth the same 
velocity given to the spindle, the honey in the larger 
can will fly off wdth three times the energy that it 
will in the smaller. 
The question arises ; Is the smaller machine neces- 
sarily less powerful than the larger? By no means: 
increased rapidity of rotation will immediately com- 
pensate for lack of size, and that, too, wdth an actual 
economy of driving pow'er (as explained by the 
