Buret and filter-stand combined.

Centrifuge—hand, electric, or water-power (Figs. [16] and [17]). With the last two a speed indicator is desirable. Radius of arm when in motion should be six and three-fourth inches. Plain and graduated tubes accompany the instrument; milk-tubes ([Fig. 128]) must be purchased separately. When sedimentation only is desired, the torfuge ([Fig. 31]) is a cheap and convenient substitute.

Cigaret-paper, "Zig-zig" brand, or some similar thin paper.

Corks, preferably of rubber, with one and two holes.

Cover-glasses, No. 2 thickness—seven-eighth-inch squares are most convenient.

Cover-glass forceps.

Esbach's tube ([Fig. 23]).

Evaporating dish.

Filter-paper: ordinary cheap paper for urine filtration; "ashless" quantitative filter-paper for chemic analyses.

Glass funnels.