LABORATORY SUPPLIES AND CHEMICALS 



355 



6336 



6336 MICROTOME Freezing Attachment, for use with Carbonic Acid. 



The superior qualities of this freezing chamber have been well recog- 

 nized during the past ten years. It is substantially made, easy to operate 

 and eminently efficient. There is a hard rubber non-conducting ring (the 

 suggestion of Dr. L. D. Wilson of St. Mary's Hospital, Rochester, Minn.) 

 between the corrugated plate to which the object is frozen and the rest 

 of the apparatus. This prevents the conduction of the cold from the speci- 

 men to the other parts, thus saving time and gas. 



This freezing attachment may be used with Microtomes Nos. 6338 and 40. 

 Complete, with copper tube connections , $10.00 



6338 



6340 



6338 MICROTOME, Automatic, Spencer Lens Co. An excellent instrument for 

 cutting celluloidin or frozen sections, may also be used for paraffine 

 sections and can be adjusted for any thickness of cut. 

 This peculiar motion of the knife makes this microtome especially desirable 

 for cutting frozen sections, and when used with our CO 2 freezing chamber 

 it has no equal. Sections may be cut, stained and mounted in one and 

 one'-half minutes from the time the tissue is placed on the freezing plate. 

 Without Freezing Attachment, with one knife $45.00 



6340 MICROTOME Table, Spencer Lens Co. For sectioning with Hand Knife, 

 running on glass traveling ways. 



This instrument may be used with freezing attachment No. 6334 or 

 No. 6336. 

 Without knife $12.50 



