A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE 
°* To the solid grouna 
Nature trusts the mind which builds for aye.’—WoORDSWORTH 
i Ly 
No. 822, VOL. 32] 
THURSDAY, JULY 30, 1885 
[PRICE SIXPENCE 
Registered as a Newspaper at the General Post Office] 
[All Rights are Reserved 
CHATWOOD'S 
DUODECUPLE oo 
PATENT 
«J 
Poe and LOCKS 
Have received highest Awards at all International Exhibitions, 
including Two Diplomas of Honours and Six Gold Medals. 
of 
London Warehouse, 76, NEWGATE STREET, E.C. 
Lancashire Safe and Lock Works, Bolton. 
RIBBON SECTION CUTTING. 
The Cambridge Scientific Instrument Company have designed a new and 
simple Microtome for cutting continuous Ribbons of Sections of Microscopic 
Preparations on the plan first adopted by Mr. Caldwell. The new instru- 
ment has the advantage over the original pattern of dispensing with the 
endless band altogether, and consequently not only avoiding the trouble 
of lifting the series of Sections from the razor, but also of allowing them to 
fall on to the glass slide in their proper position for mounting. Price of the 
Microtome, 45 5s- 
The Company are appointed Agents for the Microscopes of Zeiss, a supply 
of which is kept in stock, 
THE CAMBRIDGE SCIENTIFIC INSTRUMENT CO., 
Cambridge. 
UNIVERSITY COLLEGE, LONDON. 
The Session of the Faculty of Medicine commences on October r. 
ductory Lecture at 4 p.m. by Prof. Schafer, F.R.S. 
The Session of the Faculties of Arts and Laws and of Science (including 
the Indian School and the Departments of Applied Science and Technology, 
and of the Fine Arts) begins on October s. Introductory Lecture at 3 p.m, 
by Prof. T. Roger Smith, F.R.I.B.A. Instruction is provided for Women 
in Arts, Laws, and Science. 
Prospectuses and Regulations relating to Exhibitions, &c. (value £2000), 
may be obtained from the College, Gower Street, W.C. 
The Examinations for Andrews Entrance Prizes (Languages and Science) 
and for Medical and (Gilchrist) Engineering Entrance Exhibitions begin 
September 28 
The School Reopens September 21. 
The College is close to the Gower Street Station, 
TALFOURD ELY M.A., Secretary. 
Intro- 
THE NEW POCKET METALLIC THERMOMETER 
(PATENT) 
Is as accurate as a Mercurial Thermometer and far more sensitive, while for 
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panion. These instruments are not made on the old system of using the 
dissimilar contraction and expansion of two metals, but the motion is obtained 
expansion and contraction of a liquid hermetically sealed in a 
>vacuum. Price, in Solid Silver, the size of the engraving, in outer 
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JOHN BROW NING, 
68, STRAND, LONDON, W.C. 
NEGRETTI AND ZAMBRA, 
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Lllustrated Description Post Free. 
NEGRETTI & ZAMBRA’S 
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