HE
AND
JOURNAL OF PHYSICAL SCIENCE
Wi Ce ers] ~~ (WITH WHICH IS INCORPORATED THE “CHEMICAL GAZETTE") [aire Bott ars.
Vol. 44—No. 1131] %78# Friday, July 29, 1881. Ebi (Ph ga,
. CONTENTS. 2 i GRIFFIN'S
RTICLES !— AGE
A Differential Method of Specific Gravity Determination, by W. "CHEMICAL HANDI CRAF T.
step Lg apse 51 SECOND EDITION.
n a Curious inic Phenomenon, hy J. Cawley, A.R.S.M....... 51 7
On Sewage in Oysters, by Charles A. Cameron, M.D.,M.K.Q.C.P.T. 52 Price 4s. 17d. post free.
(ndigo, and its Artificial Produétion, by H. E. Roscoe, LL.D.,
F.R.S, &c.,, Pres. C.8.iveeieiiiiiieniriorieruensinessanncseses 53
On the Conduct of Finely-divided Iron towards Nitrogen, by Ira
REMISCI esa sansssessrasiososssrsassssssensanss asnaanssseses 54
The Owens College Course of Technological Chemistry oe 50
PROCEEDINGS OF SOCIETIES I~
AMERICAN CHEMICAL SocIerv.—Analysis of Elephant’s Milk—
-_Adulteration of Food, Drink, and Drugs seeeesersesesssssecnss 56
NoTICES OF Books.—Profitable Clay Farming under Just System
of Tenant Right—Alcohol Tables—Inorganic Chemistry—Lecture
Notes for Chemical Students—Text-Book of Practical
Organic Chemistry for Elementary Students ....ceovuvvusevess 30
CORRESPONDENCE, —The Action of Nitric Acid on Metals...vc-vs 5.
SHEMICAL NOTICES FROM FOREIGN SOURCES. . ar
CAPPER PASS AND SON, BRISTOL,
ARE BUYERS OF
LEAD ASHES, SULPHATE OF LEAD,
LEAD SLAGS, ANTIMONIAL LEAD,
COPPER MATTE, TIN ASHES, &c.,
and DROSS or ORES containing
COPPEP, LEAD, AND ANTIMONY.
INSTITUTE OF CHEMISTRY-A
CATALOGUE OF CHEMICAL APPARATUS:
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ILLUSTRATED, CLASSIFIED, DESCRIPTIVE.
Demy 8vo., 480 pp., Illustrated with 1600 Woodcuts.
Most complete and cheapest List of Apparatus.
JOHN J. GRIFFIN and SONS, 22, Garrick Street,
London, W.C.
THE JOURNAL OF SCIENCE
tor AUGUST (Price 1s. 6d.), include—
The Centre of Gravity of the Earth, and its Effect on Astronomical
Observrtions, By Col. A. W, Drayson, R.A., F.R.A.S.
Geology as a Science and an Art. By C. Lloyd Morgan.
The Source of Ele¢tric Energy. By Charles Morris.
Sham Employers. By J. Hepburn Davidson.
Soniiery Reform and its Vagaries: the Sanitary Institute of Great
ritian.
In the Probable Extension of Solar Physics to Matters Affeting the
Agriculturist, Merchant, and Man of Science. By A, H. Swinton.
Analyses of Books. Correspondence, Notes.
London: 3, Horse-Skoe Court, Ludgate Hill,
Royal 8vo., cloth, 18s.,
A PRACTICAL TREATISE ON THE
MANUFACTURE OF STARCH, Glucose, Starch-Sugar,
and Dextrine, based on the German of L. Von Wagner and other
authorities. By Jurius FrankeL. Edited by R. HUTTER, Proprietor
>f the Philadelphia Starch-Sugar Works.
London: E.and F. N. SPON, 16, Charing Cross.
THE LONDON HOSPITAL & MEDICAL
COLLEGE, MILE END, E.—The SESSION 1881-2 will
rommence on SATURDAY, OCTOBER 1st, 1881. Four entrance
Scholarships, value £60, £40, £30, and £20, will be offered for compeition
at the end of September to new Students. Entries on or before
September zoth. Fees for Lectures and Hospital Practice. go guineas
in one payment, or 100 guineas in three instalments. All resident
and other hospital appointments are free, The resident appointments
sonsist of Five House Physiciancies, Four House Surgeoncies, and
Ine Accoucheurship; Two Dressers and Two Maternity Pupils also
-eside in the Hospital. Special entries may be made for Medical
ind Surgical praétice. The London Hospital is now in dire® communication
by rail and tram with all parts of the metropolis.
MUNRO SCOTT. Warden.
THE UNITED STATES AND CANADA.
N OTICE.—The next Examination in Pra&tical
Chemistry in connection with the Institute will be held on
MONDAY, 220d AUGUST, and four days following, Candidates
‘or the Associateship who intend entering for this Examination should
commuricate with the Secretary, Mr. CHARLES E. GROVES, at Somerset
House Terrace, W.C., before the 13th August.
MINERAL OIL REFINERY.
TO BE SOLD, as a Going Concern, a Works
producing first class Lubricating Oils for Spindles and other
purposes, Paraffin Scales, &c., which have obtained a high standard
in the market, and for which there exists a good selling conne@ion in
London, Manchester, and other distri®s. The Works adjoin the
North Staffordshire Railway, with siding accommodation, and are
also conveniently situated for water carriage by canal. The Zhao
:onsists of steam engines, boilers, stills, agitators, modern Iterpresses,
double freezing machine, hydraulic press, complete laboratory,
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For cards to views or further particulars apply to Mr. J. R. Wain
Tunstall, Staff.
An Old-established Firm in the City, having a
branch establishment in New York, and the best conneion
withthe Wholesale Drug, Paint, and Allied Trades, are open to receive
offers of business to act as AGENTS, or otherwise.—Apply, by letter
only, to A. G., 42, Deacon’s Advertising Offices, Leadenhall St, E.C.
TO MANUFACTURING CHEMISTS.
FOR SALE.
(Cheap.—Two Wegelin and Huebner’'s 18-chamber
Filter-presses in wood, 2 Lead-lined Wrought-iron
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co., and connections, all in good condition.—Address, * Press,”
CueMicaL Nuws OFFICE, Boy Court, Ludgate Hill, London, E.C.
A Gentleman requires a Situation in a Chemical
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experience and ability would be required, First class references.—
Address, M. N., CueyicaL News Office, Boy Court, Ludgate Hill,
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TO BE SOLD, by Private Contract, in consequence
of dissolution of partnership and retirement of two
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Works, with old and good connection, West of London. Conveyance
dy water, rail, and road. Ground upwards of two acres freehold,
lowing room for considerable extension. Part of the purchase
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solicitors only treated with.—Apply, in first instance, to A. B,, care of
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