Bauhaus-Universität Weimar

Reports of Visits to Foreign Laboratories, vol. 3 (1913-16) [Illustrated Typoscript in 7 volumes] Reproduced with the kind permission of Dr. Cecil E. Leith
Benedict, Francis Gano
University of Maples. 
Professor Galeotti 
As Professor Galeotti has recently published work on the amount of 
moisture in expired air, I wanted particularly to see his apparatus, 
his valves, and his method of making the tests. So I made arrange¬ 
ments to visit his laboratory in ITaples. I found him a remarkably 
genial and pleasant man, who impressed me most strongly as a very intense 
worker and a man who was capable of covering a great many fields. His 
laboratory is modern and very well equipped, although in a very old part 
of the town. 
In connection with his apparatus for determining the moisture in 
the expired air (see figs. 20, 21, 22, 23, and 24) I found that he was 
using a Verdin spirometer, or gas meter, which he had secured from 
Paris. He stated that he had found this* very good indeed. It costs 
about 130 francs and at the end of two years it must be discarded, a.s 
the valves wear out. I tested it myself and found it gave no grectt 
resistance to breathing. It weighs about -6 kilograms and can be 
carried on the back. With this spirometer he uses the Zuntz gas- 
analysis apparatus. 
To absorb the moisture from the outgoing air he uses two calcium 
chloride tubes in parallel. The tubes struck me as being very, very 
small, and yet on careful examination the calibre of the entrance tube 
did not seem to be very much smaller than the calibre of the nosepieces 
ordinarily used in connection with our unit apparatus. The two currents 
of expired air from the calcium chloride tubes join in a Y-tube ana go 
to the spirometer. There was cotton wool in the outgoing end of the 
In trying the apparatus, I found it very 
calcium chloride U-tube.


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