A WEEKLY ILLUSTRATED JOURNAL 
“To the solid ground 
OF 
Of Nature trusts the mind which builds for aye.’-—WoRDSWORTH. 
No. 2304. VOL. 92] 
THURSDAY, DECEMBER 25, 1913 
| Prick SIXPENCE 
Kegistered as a Newspaper at the General Post Office. | 
{All Rights Reserved 
The College Meteorological Chart. 
The most complete Chart for Meteoro- 
logical Observations, designed expressly 
for School Use, with Records of Rainfall, 
Temperature, Strength and Direction of 
Wind, Humidity and Dew-point, Ac. 
Complete Set of Charts for One Year, 2/6; 
post free, 2 8. 
PUBLISHED BY 
NEWTON & CO.. 
Opticians to H.M. King George V. 
72, WIGMORE ST., LONDON, W. 
Also Complete Set of 
METEOROLOGICAL CHARTS FOR ONE YEAR (smaller 
than the above), I/-; post free, 1/1. 
THE HANDLE 
LonDON MODEL. 
This is a new model, in which 
the limb is nade so as to form 
a convenient handle for lifting 
the microscope. Otherwisz- it 
is similar to the ordinary 
London model. 
No. 1325. Stand, incase, 
£2: 56 
No. 1329. Stand, incase, 
with spiral focussing 
substage ie oO 
No. 364A, Eye- 
piece ... ee 
No, 801. ard 
- Object Glass 12 0 
No. 803. jth 
Object Glass 110 O 
Fut ParTICULARS OF 
R. & J. BECK, 
68 Cornhill, E.C. 
REY NOLDS & B RANSON, Ltd. 
Awards—Gold Medals, Allahabad. London, and Turin. 
G 
rand Prix, Turin. 
“RYSTOS” 
ahi a ian im 
For use with 
the 
Stroud & Rendel 
Science Lantern 
Optical Bench for lantern, one metre long, without fitrrgs, Ey ters 8 ee 
Sliding tables, 3/6 each. Lens holders, 4/6. Adjusicole slit, 4/9. 
Screen holder, 4/- Standard candle holder, 1/- Circular table, 1/6. 
Screen with gauze, 3/6. Rotating holders for nicol prisms graduated at 
0°, go’, 180° and 270°, 9/- Glass prism 60°, mounted in s,ecial holder, 4/6. 
Half-metre extension with foot, 12/6. 
The above can also be used without the lantern as an ordinary optical 
bench, and any part can be supplied separately. 
New Catalogue of Optical Lanterns and Accessory Apparatus sor the 
“S. & R-” lantern, post free. 
1a COMMERCIAL STREET, LEEDS. 
SS 
Write 
for Price 
List oy 
“ Gifts.” 
Many of our Scientific Instruments 
are useful, handsome, and ‘acceptable 
GIFTS. 
Recording Barometers from £4 4s. to £27 10s. 
NEGRETTI & ZAMBRA, 
38 Holborn Viaduct, London, E.C. 
City Branch: 45 Cornhill, E.C. 
West End: 122 Regent St., W. 
OPTICAL BENCH 
