. American chemical journal . rtional to the resistance of the solutions of thoseelectrolytes investigated, as deduced by Helmholtz.^ Theexperiments given below were made to determine more ac-curately the relative osmose of a few of the salts of nitricacid at a concentration of normal. Though the num-ber of measurements is small and they are not as accurateas we hoped to get, it is thought best to publish the resultsnow and continue the work at some future time. Before presenting the results of the work a brief descrip-tion will be given of the apparatus used. This is shown inthe accompa
. American chemical journal . rtional to the resistance of the solutions of thoseelectrolytes investigated, as deduced by Helmholtz.^ Theexperiments given below were made to determine more ac-curately the relative osmose of a few of the salts of nitricacid at a concentration of normal. Though the num-ber of measurements is small and they are not as accurateas we hoped to get, it is thought best to publish the resultsnow and continue the work at some future time. Before presenting the results of the work a brief descrip-tion will be given of the apparatus used. This is shown inthe accompanying drawing. The glass vessel B was made by cutting off the bottom ofa half-liter bottle and inverting it as shown. The bottom 1 This Journal, 26, 80. 2 Wied. Ann., 7, 351 (1879). 320 Frazer and Holmes. of the bottle is used as a cover to protect the solution and theapparatus enclosed within. To secure a better joint betweenthe two, a wide rubber band is slipped around the line ofcontact between the two parts of the The porous clay cell b is ground round for a distance of15 mm. at each end and the soapstone washers, a and i, turnedto fit accurately into these ground ends. In the center of iis a hole just large enough to allow the entrance of the drain-age tube e. This tube is enlarged at k and the bulb so formedset firmly with shellac in the cavity t, after which the wholeconnection is painted with a solution of rubber in carbonbisulphide. Before setting the washers, a and i, in placetheir surfaces and the ground portions of the porous cell arepainted with some of the same solution and when the rubberhas been thoroughly hardened the joints at the two endsof the cell are perfectly tight and rigid. The purpose of thewasher a and the enlarged upper end d of the glass tube isto limit the amount of liquid in the upper part of the celland to give a large surface over which the liquid drainingfrom the cell may flow, without diminishing the contentsof the cell. To secure pro
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