APPENDIX. 



LIST of apparatus and materials required in a beginner's 

 bacteriological laboratory: 



MICROSCOPE AND ACCESSORIES. 



Microscope with coarse and fine adjustment and heavy, 

 firm base; Abbe sub-stage condensing system, arranged 

 either as the "simple" or as the regular Abbe condenser, 

 in either case to be provided with iris diaphragm; objec- 

 tives equivalent, in the English nomenclature, to about 

 one-fourth inch and one-sixth inch dry, and one-twelfth 

 inch oil-immersion system; a triple revolving nose-piece; 

 three oculars, varying in magnifying power; and a bottle 

 of immersion oil. 



Glass slides, English shape and size and of colorless glass. 



Six slides with depressions of about 1 cm. in diameter in 

 centre. 



Cover-slips, 15 by 15 mm. square and not more than from 

 0.15 to 0.18 mm. thick. 



Forceps. One pair of fine-pointed forceps and one pair 

 of the Cornet or Stewart pattern, for holding coverslips. 



Platinum needles with glass handles. One straight, 

 about 4 cm. long; one looped at the end, about 4 cm. long; 

 and one straight, about 8 cm. long. Glass handles to be 

 about 3 mm. in thickness and from 15 to 17 cm. long. 



(635) 



