. The Biochemical journal, 1912. Biochemistry. OliSKKN A'l'IONS ON ELKCTKO-OSMOSIS 317 ((/), furuisliiMl witli ;i l)ulb :it its extreuiity ; ;ui(l C^) the (•urvcd liiub (r), providcMl bi<l()\v with ;i siopcock. Two electrodes, marked + and — , arc intntduccd into the ;i|»[iar:itus as shown in the figure. d rro) {. I \ a. Fig. 2. Some observations made with the above forms of apparatus are recorded in Table I, which serves to illustrate the degree of electro- osmosis observed. The latter ranged, it may he observed, between 0015 and 0'2 jjer hour, being less marked when 70 per cent.
. The Biochemical journal, 1912. Biochemistry. OliSKKN A'l'IONS ON ELKCTKO-OSMOSIS 317 ((/), furuisliiMl witli ;i l)ulb :it its extreuiity ; ;ui(l C^) the (•urvcd liiub (r), providcMl bi<l()\v with ;i siopcock. Two electrodes, marked + and — , arc intntduccd into the ;i|»[iar:itus as shown in the figure. d rro) {. I \ a. Fig. 2. Some observations made with the above forms of apparatus are recorded in Table I, which serves to illustrate the degree of electro- osmosis observed. The latter ranged, it may he observed, between 0015 and 0'2 jjer hour, being less marked when 70 per cent. alcohol was employed than when distilled water or a solution of glucose was used. In all cases the flow of liquid by electro-osmosis was from anode to kathode, that is to say, in the direction of the current. Table I.—Electro-osmosis tlirongh various dia])hragiiis. The aiiiounts of fluid given below correspond to a sectional area of one squan- centimetre and a potential fall in the ping of one volt per centimetre. The first three experiments were mmU' with the apparatus shown in Fig. I ; the remaining exiierinients were made wUh Perrin's api)aratus, Fig. 2. The + sign in<lieates flow of fluid from anode to kathode. Material of which Liquid in contact with diaphiagm Mas diaphragm composed % solution of glucose in water Filter paper % solution of glucose in water Kilter pajxT No. of Experi- ment 1 2 ,1 4 5 % solution of glucose in water Filter pa])er 6 7 8 9 10 alcohol 70 % alcohol 70 % alcohol 70 % alcohol 70 % alcohol Distilled water Distilled water Amount of electro-osmosis per hour. Aj)pro.\inuitely -f ISO I'.mm. Approximately + I'M) Ai)proximately + 100 .Vl)proximatcly + 34 A})proximatel3' + 35 Approximately + Powdered naphthalene + Powdered suljihur Ajiproximately -f Powdered sulphur Approximately + 191 Powdered sulphur Approximately -f 197 Cotton wiHil {(i) Cotton wool {!)) Cotton wool (r) 35 15 44 c
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbiochem, bookyear1912
