No. ia No.
ib.
KO. 2.
No. 3a.
No. 36.
No. 4.
Weight per square yard, 8 oz. Warp, wool, 40 lhs. tensile, per inch. Filler, goats' hair, 28 Ibs. tensile, per inch. Weight per square yard, y oz. Warp, wool, 57 Ibs. tensile, per inch. Filler, goats' hair, 42 Ihs. tensile, per inch. Weight per square yard, 10 oz. Warp, cotton, 8 9 Ibs. tensile (one inch wide). Filler, goats' hair, 6 9 Ibs. tensile (one inch wide). Weight per square yard, 9 oz. Warp, wool, 49 Ihs. tensile (one inch). Filler, human hair, 47 lbs. tensile (one inch). Weight per square yard, 6 oz. W a p , wool, 44 lhs. tensile (one inch). Filler, human hair, 30 lbs. tensile (one inch). Weight per square yard, 15 oz. Warp, human hair, 67 Ihs. tensile (one inch j . Filler, human hair, 84 Ihs. tensile (one inch). &AS.
P.
FOX.
KOENIG POTASH BULB.' There are five advanages which this bulb has over the other bulbs thus far in use: First.-Accuracy in cleaning a t each weighing. All parts are easily accessible. Second.-Accuracy in quick absorption. The bubbles bursting rapidly will not drive, liquid over into
Dc.scriptio.i~,.-The gas enlcrs a t tube markeii "gas enters," passes into A , then into tube B , through i t and oat a t bottom into bulb (., squeeziiig through contrxrtion up into I3 again, up into E , then passing into tubc F (which is fused open on outside of tube B a n d open on outsidc of bulb C ) , dnwn through F and out into thc bottle G,G,G, passing through solution, then up and out through tube 1-1 into the calcium chloride tubc which it leaves a t opming marked "gas exit." The instrument holds nearly twice as much KO13 solution as the Mohr bulb, therefore will act for twice as many combustions without refilling. It weighs not over twenty grams. To fill the instrument a pi& of rubbor tube is attarhed a t il and KO11 solution sucked in at tube markcd ' , g a s enters.'' To empty, the liquid is forced out a t tube marked "gas enters'' by blowing at tube H. W. I\.K o E K I G .
_ _ ~ _ FILTERING RACK.
As any sugar-house chemist knows, thc lirst few drops of a filtering solution shall be rejected. Letting these, generally turbid drops, first fall into the jars, often makes i t very difficult to obtain a perfectly clear solution. With my rack I thought t o simplify
FiY 3.
the operations by preventing these turbid drops from getting into t,he jars. Photo S o . I shows the front of the rack, a stand lor the fiitcring jars and a hoard for the funnels. Photo No. 2 shows the hack. Directly under the funnel board is seen an inclined gutter of a grade of about 2 per cent.; under the lowcr end of this is placed a receptacle.
the calcium chloride tube and as the gas is washed five times instead of three i t allows of more rapid circulation. Third.-Amount of condensation surface is much less in this bulb. Fourth-Center of gravity on balance pan at each weighing can be found quickly and correctly. Fifth.-Saving of time can he seen from the above and better on trial. The simplicity of the exposed parts make i t less easily broken.
