= > \ -/§ WEEKLY ILLUSTRATED JOURNAL OF SCIENCE 
/ 
“To the solid ground 
MI Wer Of Nature trusts the mind which builds for aye.’ —WORDSWORTH 
) yB 2 F 5 ».¢ ‘(Qs 
No. 834, VOL. 32] THURSDAY, oe 22, 1885 wee SIXPEN 
ffi ll Right Reserved 
Registered as a Newspaper at the General Post Office] [A ights are Rese 
THE NEW 
CHATWOOD'S 
DUODECUPLE 
PATENT 
Pe SAFES 
3 ss and LOCKS 
Have received highest Awards at all International Exhibitions, 
including Two Diplomas of Honour and Six Gold Medals. 
oa 
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London Warehouse, 76, NEWGATE STREET, E.C. 
Lancashire Safe and Lock Works, Bolton. [513 
SELF-REGISTERING ANEROID BAROMETER, 
This instrument has neither a spring nor chain, The motive 
power of the Barometer is obtained from seven vacuum 
Bee will societet automatically with ink on a diagram, by 
means of an eight-day clock motion contained in the drum, 
the fluctuations ‘of the Barometer for a week, An illustrated 
description sent post free. 
PRICE £6 Os. _ 0d. 
JOHN BROWNING, 
63, STRAND, LONDON, w.c. 
Prof. Loisette’s DISCOVERIES, THE PHYSIOLOGICAL 
ART OF NEVER FORGETTING—wholly unlike mnemonics. 
Lost memories restored—the worst made good, and the best 
better. Any book learned in one (eee Speaking without 
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SUCCESS, P®osrncrus Post FREE, 
with Ppa of 
Mr. R. A, PROCTOR, Dr. ANDREW WILSON, &c. 
NEVER FORGETTING and CURE for MIND- WANDER- 
ING taught thoroughly by Post, in Classes, and Privately, 
PROF. LOISETTE, 37, New Oxford Street, London, W.C. 
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, £5 ss. 
The Company are appointed Agents for the Microscopes of Zeiss, a supply 
of which is kept in stock. 
THE CAMBRIDGE SCIENTIFIC INSTRUMENT CO., 
Cambridge. 
OO ee a 
NEGRETT! & ZAMBRA’S 
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LEVELS, 
Circumferentors, 
MINERS’ DIALS, 
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COMPASSES, 
Drawing 
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ANEROIDS, &c. z 
Tilustrated Price Lists Pan free. 
NEGRETTI. & ZAMBRA, 
SCIENTIFIC INSTRUMENT MAKERS TO 
Her Majesty THE QUEEN 
Holborn Viaduct ; 45, Cornhill; & 122, Regent St., London. 
PHOTOGRAPHERS—CRYST AL PALACE, SYDENHAM. 
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