Bauhaus-Universität Weimar

Titel:
Reports of Visits to Foreign Laboratories, vol. 1 (1907) [Illustrated Typoscript in 7 volumes] Reproduced with the kind permission of Dr. Cecil E. Leith
Person:
Benedict, Francis Gano
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit39744/222/
Santa misquotes Johansson.—A pupil of Suntz, studying muscular 
work, finds results quite different from those of Johansson, (See 
208 
Skand, Archiv, vol. 13, p. 293) Zuntz, in writing a note to the 
article, which v/as published in Fflttger’s Archiv, vol. 95, p. 149, 
states positively that Johansson agrees with him. Johansson is at a 
loss to understand why he v/as quoted in this way as the results do not 
agree in any way. 
Minor apparatus in the laboratory of hr. Landergren.—Dr. Lander- 
gren has made a special study of metabolism in diabetes, has a growing 
clinic, and is a very serious student. He is working in a laboratory 
in the same building with Prof. Johansson, but is devoting his time 
exclusively to urine analysis. 
The Kjeldahl room presents two novelties. One of these is an 
electric motor which is fastened directly to a fan to produce a slight 
positive ventilation in the room and thus force the dra't up the 
chimney; in other words, the hood is so adjusted that a slight positive 
draft forces the hot gases through the flues. 
An ordinary luminous Argand burner, with a fire clay or pottery 
burner, is used for heating the Kjeldahl flasks during digestion. 
Use of bits of zinc.—For distilling acetone, small squares of 
zinc, like the tacks used for fastening glass into frames, are used. 
In the Kjeldahl distillation, three or four bits of this zinc are used 
in place of the zinc test or lumps of zinc. 
Apparatus for ether extraction of liquids.—For determining the 
B-oxybutyric acid, the apparatus for the extraction of liquids by ether, 
devised by Magnus-Levy, is here used. This apparatus, together with 
a fire-proof water bath devised by Landergren, is shown in Fig. 68. 
The glass extraction apparatus is shown at the left, leaning against 
a gas bracket. The ether extraction apparatus has a flame enclosed
        

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