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Chem. Xoc., 1905, 27, 732--736).-An improved Hempel apparatus, the chief object of which is to prevent any chance of loss or gain in the volume of gas when transferring it to the burette or pipette. L. DE K. Methods of Electro-analysis. NICOLAI A. PUSCHIN and R. M. TRECRZINSKY (J. Russ. I'hys. Chem Soe, 1905, 37, 392--417).-The authors give the results of their investigatians on the most suitable forms and arrangement of the apparatus in an electro-chemical labor-doi:10.1039/ca9058805607 fatcat:lwqdq3gvn5ahdpenicmbfl6hn4