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SUMMARY OF CURRENT RESEARCHES RELATING TO 



Apparatus for Facilitating the Manipulation of Celloidin Sections. 

 B,. Haiulyn-Harris writes that anyone who has had experience in pre- 

 paring, staining, and mounting a series of celloidin sections will have 

 appreciated the difficulties of manipulation and of keeping each sec- 

 tion in its proper order and of staining eacli uniformly. It was while 

 considering this subject, and having to deal with an object, the indi- 

 vidual sections of which had to be carefully mounted in successive order, 

 that the apparatus (fig. 52) suggested itself to the writer's mind. 



It will not be difficult to gather from the illustration that the 

 apparatus consists of separate compartments, each of which represents 

 a cell capable of holding one or more sections. These are handled either 

 by a small brush moistened in 80 p.c. alcohol, or by an ordinary section- 



FlG. 



lifter, and placed into each cell successively. The whole apparatus and 

 contents can then be submerged in 80 p.c. alcohol until wanted. 



By means of the handle the whole appliance can be taken out of one 

 kind of fluid and placed in another without moving the sections from 

 their respective cells. Care is needful that they do not get washed out 

 of the partitions in the transfer from one fluid to another. This may 

 be prevented by the use of a small brush, and should any section rise to 

 the surface, it can be easily replaced in position. The body of the ap- 

 pliance is formed of one piece of a non-corroding metal, while the bottom 

 is made of brass. The diameter of the apparatus is ?>^ in. ; the plate 

 is iVin. thick and the partitions ^-in. thick. Measured from the out- 

 side the height of the sides is | in. and that of the handle f in. The 

 handle can be unscrewed and removed. In each compartment there is 

 a perforation to allow the fluid to escape when the transfer is made from 

 one fluid to another. 



No further description is necessary as every microscopist will see at 

 once the advantages claimed for the invention. It has been exceedingly 

 useful to the writer and he hopes it may be of service to others. If the 

 apparatus were made in a square form and if suitable glass vessels could 

 be got to fit it, a greater advantage would result, as space for several 



