428 BOTANICAL GAZETTE DECEMi 
By a series of pulleys on shafts, as shown in fig. 1, any desired 
speed of revolution can be secured. In the figure two centrifuges 
are shown for revolution on a horizontal axis. The centrifuge nearer 
the motor shows a large chamber fastened to the revolving plate, as 
already described from this laboratory by REED,3 while the centri- 
fuge at the right carries a plate of ordinary size—about 15°™ in 
diameter. 
c 
Fic. 1.—Electric motor (a) and two horizontal centrifuges (6 and ¢). 
Il. THE KLINOSTATS. 
The centrifuges of fig. 1 are immediately turned into klinostats 
the interposition of a worm reducing gear between the motor and the 
first shaft pulley. Fig. 2 shows the apparatus set up for klinostat 
revolution; but in this figure, instead of the simple shafting with 
plate attached, as in fig. 1, we have a special form of klinostat shown, 
a form capable of revolution about either a vertical (a), a horizontal 
axis (6), or any oblique axis. 
by 
III. DESCRIPTIVE DETAILS. 
The chief excellencies of this apparatus are found in what may 
be termed its unit construction, enabling.an interchange of parts and 
an indefinite increase of turn-tables. The shafts are all the — 
diameter, the pulleys are interchangeable, and the shaft supports are 
all the same size. 
3 REED, A damp-chamber for use on the klinostat. Jour. Appl. Micros. 4° “” 
I. 
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