The Pharmaceutical era . r of the infusionwould remain in the dialyzer. The process may be made use of by toxicologists toseparate crystalloidal poisonous substances from mix-tures of organic matter which would interfere with theiridentification by chemical tests. The form of the dialyzer is of minor importance. Allthat is necessary is the means of dividing the liquids tobe subject to osmose by means of an appropriate mem-brane. A very efficient dialyzer is the inverted funnelshown in the figure. (Fig. 14.) Osmose plays an important part in the animal econ-omy. It is by this process that the n
The Pharmaceutical era . r of the infusionwould remain in the dialyzer. The process may be made use of by toxicologists toseparate crystalloidal poisonous substances from mix-tures of organic matter which would interfere with theiridentification by chemical tests. The form of the dialyzer is of minor importance. Allthat is necessary is the means of dividing the liquids tobe subject to osmose by means of an appropriate mem-brane. A very efficient dialyzer is the inverted funnelshown in the figure. (Fig. 14.) Osmose plays an important part in the animal econ-omy. It is by this process that the nutrient portionsof the food pass from the intestinal cavity into the bloodvessels, and from the latter to the tissues. In like man-ner, it is by osmose that the tissues discharge theirwaste products back into the blood. Osmose is alsothe method by which the roots of plants absorb materialsfrom the soil, and one of the forces by means of whichthe ascent of sap from the roots to the highest part ofthe tree is Osmotic Pressure.—Generally but not invariably, the great-er amount of osmose will be from the less dense liquidto the denser one. A dense liquid in the dialyzer, as sy-rup, will gradually increase in volume, while decreasingin density. By appropriate means it can be shown thatthis increase in volume, if restrained by pressure, mayexert a force equal to three or four atmospheres. Thisexhibition of force is known as oxinntir. prcsnure. From the circumstance of osmotic pressure, and alliedphenomena, it has been thought that substances in solu-tion are in a state of partial dissociation whereby theirmolecules are able to act as if they were in the gaseousstate. Influence of Temperature.—Heat has, in general, an impor-tant effect upon diffusion phenomena. In the case of 414 THE PHARMACEUTICAL ERA. [September 23, 1897. the diffaaion of gaaee into gates, and liquids into liquids,raiatnc the temperature accelerates the action by in-erMaiDK the rate nnd mnge of th
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Keywords: ., bookcentury1800, booksubjectdrugs, booksubjectpharmacy, bookyear1
