MOUNTING MICROSCOriCAL OBJECTS. 179 



by means of a pin's head (the pin mounted in a handle), or by a 

 wire used as a soldering tool, by heating in the flame of a lamp, and 

 which is applied on the top of the cover at the margin ; the wax is 

 melted (only under the margin of the cover, however), thus fastening 

 the cover securely — the different colour of the melted and attached 

 wax shows when this is completely done. The whole may now 

 receive immediately a finish of any of the ordinary varnishes, and 

 with no fears of running in. If the wax ring is neatly made, and 

 soldered to the cover (if I may be allowed the expression), a minute 

 ring of it— red, or blue, or white — may remain as a finish, or the 

 whole may be covered with the black varnish. I find the coloured 

 wax works somewhat better in punching than the bleached or white. 

 For mountingForaminifera the wax bottom cell cannot be surpassed ; 

 indeed, no one who bas used it will return to paper or any other 

 substitute. 



