354 



CENTRAL SCIENTIFIC CO., CHICAGO, U. S. A. 



No. 8934. 



No. 8936. 



No. 8940. 



No. 8942. 



MICROTOME ACCESSORIES 



8932. BLOCKS, Red Fiber, for holding specimens for sectioning. 



.No A B C D 



Size, inches %*%*% %x%x% %x%x% lxlx% 



Per 100 $3.00 4.00 5.25 8.25 



8934. EMBEDDING BOX for Paraffine, consisting of two angle pieces of metal with a metal plate. 



No ,. A B C 



Height, mm 10 20 30 



Each 75 .75 .75 



8936. EMBEDDING TABLE for Paraffine, of cop'per, 400 mm long and 190 mm wide tapering to a 

 point. With removable legs, 213 mm high 2.00 



8940. FREEZING ATTACHMENT for Carbon Dioxide, for Nos. 8884 and 8910 Microtomes. Sub- 

 stantially made, easy to operate, and exciedingly efficient. A hard rubber non-conducting 

 ring between the corrugated plate, to which the object is frozen, and the rest of the appara- 

 tus, prevents the conduction of cold away from the specimen, thus saving time and gas. The 

 chamber is provided with a pin like that on the object clamp, which fits into the same socket 

 on the microtome. The chamber is connected with the CO 2 cylinder by a flexible copper tube. 

 In operating, the valve at the chamber should first be closed and the valve at the cylinder 

 slightly opened, to admit the gas into the tube. Then, by opening and closing the small 

 valve at the chamber three or four times in quick succession, the tissue is frozen without any 

 waste of gas and without any inconvenience caused by the freezing up of the chamber or the 

 connections. By this method a section may be cut, stained and mounted ready for examina- 

 tion in one and one-half minutes from the time the tissue is put on the chamber. Com- 

 plete with copper tube connections 10.00 



8942. FREEZING ATTACHMENT for Ether. Consists of a freezing chamber of hard rubber which 

 so prevents the radiation of the cold that the tissue is quickly frozen. It will freeze tissue 

 15 mm in diameter and 3 mm thick in one minute, using only 5 cc of ether. The ether is 

 held in the metal tank, which for filling may be unscrewed from the support from which it 

 is suspended. Any excess of ether which does not evaporate is drained back into the metal 

 chamber from which it came. There are no bottles or entangling tubes and no waste of 

 ether. It is simple, compact and efficient. It can be used on any sliding microtome, such as 

 Nos. 8884 and 8910 7.50 



8948. HONE, Ezy Edge, 5% inches long by 2 inches wide, a fast, smooth-cutting hone, combining the 

 sharpness of an artificial hone with the softness of the Belgian. With directions for use .75 



8950. HONE, Blue-Green, with small rubbing block, 6 inches long 20 



8952. PALM OIL SOAP for use with Nos. 8948 and 8950 per cake .15 



