706 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
acid and spirit recommended by Dr. Klein for the study of karyokinetic 
figures. The most likely place to find the parasites is in a section passing 
through or near the growing edge of the cancer ; indeed, care must be 
taken that the parts selected be really from the growing edge. 
Taylor’s Freezing Attachment to Microscopes.* — Dr. T. Taylor 
gives the following description of his apparatus : — 
“ This device, which I have prepared for use with the Microscope, 
is the result of a long experienced want of some method of crystallizing 
the various oils and their acids, so as to obtain microphotographic views 
of their respective crystalline arrangement, a knowledge of which is im- 
portant in microscopic investigations relating to adulteration of food, and 
other oils. Another advantage 
offered by this invention is, 
that by this method objects in 
natural history mounted in 
varnish or other media may be 
thrown on a screen and photo- 
graphed. In the use of sun- 
light or Drummond light the 
liquid soon reaches 212°Fahr., 
and thus renders a valuable 
mount useless.” 
The freezing-box (fig. 103) 
is made of brass or of Ger- 
man silver, and is attached to 
the stage of the Microscope by 
means of two clamps ; a a represent tubes, one of which supplies the 
freezing solution and the other carries it off. A pail to receive the 
waste liquid is in readiness, and is connected in the usual way by means 
of rubber tubing, c is an opening through the centre of the box to 
admit of the transmission of rays of light to the object under investi- 
gation. The freezing liquid may be used repeatedly, or until it ceases 
to be cold enough for the purpose. Any of the usual freezing liquids, 
or ammonia, gas, or ether may be used. The tube which carries off the 
liquid from the freezing-box should terminate in a small orifice, to 
prevent unnecessary waste. The box is provided with an air-escape, 
to facilitate the operation of filling the box with freezing liquid. When 
this is accomplished, plug the opening and secure the box in position. 
In using ether, remove the plug to allow the ether to escape, or insert 
a tube to convey it to a separate vessel, where it may be condensed.” 
Fig. 108. 
(3) Cutting-, including Imbedding and Microtomes. 
Reinhold-Giltay Microtome.^ — Dr. J. W. Moll describes the micro- 
tome designed and constructed by Herr H. Reinhold of Amsterdam in 
collaboration with Herr J. W. Giltay of Delft. The main axis of the 
instrument a b (fig. 104) is supported on the left against the conical end 
of the screw c, and on the right by the metal block d, in which it rotates. 
* St. Louis Med. and Surg. Journ., xiv. (1893) pp. 162-3 (2 figs ). 
t Zeitsclir. f. wiss. Mikr., ix. (1893) pp. 445-65. 
