A WEEKLY ILLUSTRATED JOURNAL OF SCIENGE! 
“To the solid ground . 
Of Nature trusts the mind which builds 1am we WORDSWORTH. /i'5y 
— = 9 ot AA en 
Nog VoL. — THURSDAY, JULY iit _1912 y uae _{PRICE SIXPENCE 
_ {All Rights Re: Reserved. 
- ‘REYNOLDS & BRANSON, Ltd. 
NEWTON & CO. S é\ con SAREE IE SH for Stents Apperaas— y 
NEW MODEL f “RYSTOS ” OPTICAL BENCH 
ASTRONOMICAL y : | For use with the Stroud & Rendell Science Lantern, 
TELESCOPE. Z 
Complete with 34 in. object 
glass, 2 eyepieces, finder, &c., 
on altazimuth stand. 
Complete, 
£15 
Optical Bench for lantern, one metre long, without fittings, £1 10 O. 
| Sliding tables, 4/6 each. Lens holders, 5/6, Adjustable slit, 4/9. 
| Screen holder, 4/- Standard candle holder, 1/- Circular table, 1/6. 
Screen with gauze, 3/6, Half-metre extension with foot, 12/6. 
, ie The above can also be used without the lantern as an ordinary optical 
By Royal Warrant to H.M. the King. | bench, and any part can be supplied separately. 
72 WIGMORE STREET, LONDON, Ww. Descriptive Circular of Accessory Apparatus for the 
Established over 200 Years Telegrams: ‘‘ Newtobar, London.” “'S. & R.” lantern, post free. 
' 14 COMMERCIAL STREET, LEEDS. 
THE “LONDON” The ‘ANEMO-BIAGRAPH” 
MICROSCOPE. registers the velocity of the 
A New Form for Research Work. wind ; shows plainly every 
(THE RECENT MODEL.) gust and lull; gives an 
‘’ | accurate record of the wind 
See dee times “* structure”; and the 
: sel | correct mean velocity 
Swing-out’ centring and 
feelers: sulsiaze. _ at any time. It is easily 
| erected, the connection 
Iris diaphragm in stage : a 
level with surface. being effected | by 
Findamdivisions to | flexible composition 
mechanical stage, &c. | tubing. 
Price £20 
CANTOR LECTURES 
By Conrap Beck Descriptive pamphlet sent post fre 
on the Theory of the 
Microscope, Price 1/- | NEGRETTI & ZAMBRA, 
Holborn Viaduct, Londoa, E.C. 
R. & J. BECK, LTD., 45 Cornhill, E.C.; and 
68 CORNHILL, E.C. 122 Regent Street, W. 
