Appletons' Popular Science Monthly, May 1899: Volume LV, No. 1, May 1899Various
History
Appletons' Popular Science Monthly, May 1899: Volume LV, No. 1, May 1899
Various
Science -- Periodicals; Technology -- Periodicals
A new process for the production of a textile material is thus
described in Industries and Iron: "It consists of 'squirting,' in a
fashion similar to that of making electric incandescent carbons, pure
gelatin in threads of about one thousandth part of an inch in
diameter, the thread being taken away on revolving tapes. The threads
are wound upon reels and exposed to formalin vapor, which exercises a
most remarkable effect on the gelatin, rendering it insoluble in any
medium yet applied to it. The tensile qualities of the thread are also
increased, while, in opposition to that produced under the Lehner
process (which is simply forming nitrated cellulose into threads for
weaving), it is capable of taking up any dye desired; and it is, of
course, impervious to any hygroscopic influence."
NOTES.
Prof. E. C. Pickering, of the Harvard College Observatory, announces
the discovery by Mrs. Fleming of a new variable star in Sagittarius.
It was found on eight of the photographs in her large collection. On
March 8, 1898, it was of the fifth magnitude, and on April 29, 1898,
of the eighth magnitude. A plate taken on March 9, 1899, shows it
still visible and of the tenth magnitude. Its spectrum resembles that
of other new stars. The entire number of new stars discovered since
1885 is six, of which five have been found by Mrs. Fleming.
Because of the great loss by fire which occurs every year in the
Russian villages, the government is making efforts to induce the
peasantry, says the _Saturday Review_, to employ some less dangerous
material than straw thatch for the roofing of their _izbas_. There has
already been a large increase in the use of shingle, and this has led
to a considerable importation from Belgium and Germany, and also from
the United States, of simple and inexpensive shingle making machines,
for use in rural districts. German manufacturers, whose "commercial
intelligence department" is remarkably well informed, are now making
redoubled efforts to meet the immense demand anticipated. An improved
and inexpensive hand fire engine is also being provided. Roofing felt
or paper is very generally used under the shingle, and the demand for
this is also increasing.
A fourth specimen of the _Notornis Mantelli_, a bird of New Zealand
supposed to have become extinct, was captured in August last, and has
been prepared for the museum by Mr. W. B. Benham. The first specimen
was obtained, recently slain, by Mr. W. Mantell, in 1849, and is
preserved in the British Museum; the second was killed by Maoris in
1851, and is in the Colonial Collection; and the third, now in the
Dresden Museum, was taken in 1879. All these birds were found in a
single denuded region of the country. The present specimen was caught
by a dog in the bushes near Lake Te Anan, still in the same region,
and is a very fine young female.
Public-domain text, read in full here on John Shaqi.
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