TOOLS AND METHODS OF WORK 15 



microtome and section knife, paraffin bath and spirit lamp, turntable, 

 forceps, needles, scissors, dishes and watch glasses, a graduated 100 cc. 

 measure, pipettes, sable brushes of various sizes, wire clips, tin rings 

 for building up cells, 3in. by lin. plain slips, cavity slips, circular and 

 oblong cover-slips, mounting block, stains, balsam, glycerine jelly, 

 clearing-oils, bottles for specimens, incubator or drying apparatus. 



Good microscopes are supplied by the leading opticians, but some 

 difficulty may be experienced in obtaining a suitable microtome from 

 this source, as each type appears to have been designed for one branch 



Fig. 5. — The old "Flatters'' microtome, from which the present microtome 



was evolved. 



of work only, and that chiefly animal histology. I, therefore, describe 

 somewhat fully the instrument I have used in my botanical and textile 

 work since 1892. It is the outcome of several previous instruments, 

 all of them more or less deficient in some respects. See Figs. 6 to 9. 



