1888. | 30TANICAL GAZETTE, Lt 
back mentioned above. It should be observed, however, 
_ that this microtome is properly not adapted for making a 
Series of sections, as the knife can not be placed in a trans- 
_ verse position. But this difficulty may be overcome by re- 
_versing that part which holds the object and further making 
some slight alteration in its arrangement, by which, how- 
ever, the instrument loses still more of its stability, already 
hot very great. Notwithstanding these objections, I suc- 
~ ceeded in making ribands of sections well enough, if needed, 
_ keeping them flat with a piece of cross-wire held in the left 
hand while cutting with the right. The sections thus gained 
must now be glued to the slide before dissolving the paraffin. 
Tf a series of sections has been made, or sections in which 
mens. rom these he may then choose at leisure the most 
Successful ones; or those exhibiting the phenomenon sought 
for, and reject the rest. 
finger. After this the slides remain for a quarter of 
‘n hour in the oven, at a temperature of about 50° 
‘\. There the paraffin melts and the sections settle into 
the layer of gluing substance. It is also sufficient to heat 
] the slides cautiously for one or two minutes over the flame 
In both cases the slides, when still warm, are plunged into 
