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Page 44
The following shows the solubility of saccharin in the various liquids
quoted, all, with the exception of the boiling water, being taken at
60� F.:
Boiling water 0.60 parts per 100 by volume.
Cold water 0.20 " " "
Alcohol 0.800 4.25 " " "
Rectified spirit 0.838 3.20 " " "
Ether 0.717 1.00 " " "
Chloroform 1.49 0.20 " " "
Benzene 0.40 " " "
Petroleum ether insoluble.
It is also sparingly soluble in glycerin and fixed oils, and to a
greater or less extent in volatile oils. Benzoic aldehyde dissolves
saccharin in large quantities.
I was somewhat disappointed at the slight solubility of saccharin in
ether, as it has been repeatedly stated to be very soluble in that
liquid.
The quantity of saccharin required to communicate an agreeable degree
of sweetness, like sugar, differs with the material to be sweetened;
but from half to one and half grains, according to taste, will be
found sufficient for an ordinary breakfast cup full of tea or coffee
infusion.--_Pharm. Jour._
* * * * *
ALCOHOL AND TURPENTINE.
In a paper entitled "The Oxidation of Ethyl Alcohol in the Presence of
Turpentine," communicated to the Chemical Society by Mr. C.E.
Steedman, Williamstown, Victoria, the author states that dilute ethyl
alcohol in the presence of air and turpentine becomes oxidized to
acetic acid. He placed in a clear glass 16 oz. bottle a mixture of 2
drachms of alcohol, 1 drachm of turpentine, and 1 oz. of water. The
bottle was securely corked and left exposed to a varying temperature
averaging about 80� F. for three months. At the end of that time the
liquid was strongly acid from the presence of acetic acid. One curious
fact appears to have light thrown upon it by this observation.
Mr. McAlpine, Professor of Biology at Ormond College, Melbourne
University, has a method of preserving biological specimens by
abstracting their moisture with alcohol after hardening in chromic
acid, and then placing the specimen in turpentine for some time; great
discrepancies arise, however, according as the alcohol is allowed or
not to evaporate from the specimen before dipping it into turpentine.
* * * * *
THE SCIENTIFIC AMERICAN
ARCHITECTS AND BUILDERS EDITION.
$2.50 a Year. Single Copies, 25 cts.
This is a Special Edition of the SCIENTIFIC AMERICAN, issued
monthly--on the first day of the month. Each number contains about
forty large quarto pages, equal to about two hundred ordinary book
pages, forming, practically, a large and splendid MAGAZINE OF
ARCHITECTURE, richly adorned with _elegant plates in colors_ and with
fine engravings, illustrating the most interesting examples of modern
Architectural Construction and allied subjects.
A special feature is the presentation in each number of a variety of
the latest and best plans for private residences, city and country,
including those of very moderate cost as well as the more expensive.
Drawings in perspective and in color are given, together with full
Plans, Specifications, Costs, Bills of Estimate, and Sheets of
Details.
No other building paper contains so many plans, details, and
specifications regularly presented as the SCIENTIFIC AMERICAN.
Hundreds of dwellings have already been erected on the various plans
we have issued during the past year, and many others are in process of
construction.
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