THe MICROSCOPE. rare 
cutting any hard material, which requires absolute rigidity in the 
instrument. 
3S 
Ea 
The knife is attached to a heavy nickel-plated iron carriage, A, 
by a steel clamp and shoe, 6 and c, with milled-head screws, a. The 
carriage runs on a solid iron track, h and B, which is held to a table 
by clamp screw, k. 
For cutting very hard objects, like the wiry stems of plants, or 
the chitinous skeletons of insects, there is an attachment with a very 
stout blade, on the principle of a carpenter’s plane, d, which screws 
on to the carriage in place of the knife, and like the knife it can be 
used straight across or obliquely. 
Microtome No. 1 gauges to ;,,4;5 Inch, and it will cut paraffin 
or any object imbedded in it, that can be cut that thickness. Now 
as a matter of fact, sections of ;5,},, inch are seldom wanted, except 
to show the skill of the “ artist,’ but this fineness of feed will enable 
the operator to graduate the thickness of the section just to his 
liking. 
No. 2 gauges to ,,'>> inch, and meets all the common require- 
ments of the botanist. 
The King Microtome should not be confounded with “King’s 
Providence Microtome,” which is not now in the market; the prin- 
eple is the same, but the mechanism has been very much simplified 
and improved, and the workmanship is first-class. 
Full directions for use accompany each instrument. 
Epeartown, Mass. 
