Dec. 2, 1869] NATURE 151 
OBSERVATORIES, EQUATORIAL TELESCOPES, ASTRONOMICAL CLOCKS, LEVELS, ETC. 
i eCOOKEA AND SONS. 
Optician to H.R.H. the late Prince Consort, the Royal Family, and Her Majesty's Home and Indian Governments, 
B UiCKUNIG HA Ms WwW OR KS, YO RK 
Illustrated Catalogues of Observatories, Equatorial and all other descriptions of Telescopes, Astronomical Clocks, Theodolites, Levels, 
Clinometers, Gold Band Aneroids, &c. manufactured by T. COOKE and SONS, may be had on application to the Works. 
FOR CHRISTMAS PRESENTS, ETC. 
NEW & BEAUTIFUL SLIDES & EFFECTS FOR THE MAGIC LANTERN & DISSOLVING VIEWS, 
ALSO THEIR NEW CHEAP STUDENT MICROSCOPE, THE BEST CHEAP MICROSCOPE MADE. 
GOULD AND PORTER, (Late Cary), 
OPTICIANS AND MATHEMATICAL INSTRUMENT MAKERS 
To the Admiralty, Royal London Ophthalmic Hospital, Royal Geographical Society, Royal Military College, Sandhurst, Trinity House, 
Christ's Hospital, King's College, &c. &c. 
181, STRAND, LONDON. EsTABLISHED UPWARDS OF A CENTURY. 
eee? WILLIAM LADD: 
11 & 12, BEAK STREET, REGENT STREET, W. 
(Scientific Instrument Maker by Appointment to the Royal Institution of Great Britain,) 
Manufactures Scientific Instruments of every description, including 
MICROSCOPES, TELESCOPES, SPECTROSCOPES, INDUCTORIUMS, 
And all Instruments for Philosophical research. | 
CATALOGUES FORWARDED FOR TWO STAMPS, 
SILVER MEDAL. PARIS, 1867. THE MINIATURE SPECTROSCOPE, 
ADE ON REM O VE D.— | This Instrument will show many of Fraunhofer’s Lines, the Bright Lines of 
INDIGES Brig 
MORSON’S PEPSINE WINE, POWDER, LOZENGES, AND the Metals and Gases, ‘and the Absorption Bands in Coloured Gases, Crystals, 
GLOBULES are the successful and popular remedies adopted by the | oF Liquids. 
medical profession for indigestion. Sold in bottles and bexes from 2s., with Price, with Five Prisms ........... «4h 0 0 
full directions, by MORSON and SON, Southampton-row, Russell-square, », with Achromatic Lenses, ee Ci 
London, and by all pharmaceutical chemists, Caution.—See name on ‘ 
each bottle. These Instruments can be adapted to the Microscope; price 1 2s. and 
42 12s. 6¢. New Illustrated Catalogue of Spectroscopes for 13 Stamps. 
SCHOOL OF CHEMISTRY, JOHN BROWNING, Optical and Physical Instrument Maker to the Royal 
2 Observatory, &c. &c. 111, Minories, London, E.C. 
20, GREAT MARLBOROUGA STREET, - - ——— 
R SPE - 
LONDON, W. SOLAR SPECTRUM. 
Just published, price 7s. 6d. 
A Chromo-Lithograph of the Solar Spec- 
= TRUM, (42 in. by. r4 in.) containing upwards of Five hundred Solar lines. 
PELI CAN L| FE ASSU RANGE COM PANY, ait pees Ca Steee SEM ESEINS of Scientific Instruments, 11 & 12 
Established in 1797, : , 
7o, LOMBARD STREET, CITY, and 57, CHARING CROSS, OZONE.—BARTH’S Apparatus with pure 
WESTMINSTER. Oxygen retained in its nascent state by compression is specific in all Diseases 
arising from impurity of blood. May be had on Hire with option of purchase 
DrirectED By ARTHUR VACHER. 
Directors. from G. BARTH & CO. 26, Duke Street, Bloomsbury, W.C. 
Henry R. Brand, Esq. M.P. Kirkman D. Hodgson, eo = 
Octavius E. Coope, Esq. Henry Lancelot Holland, Esq. 
youn Coope Davis, Esq. Sir John Lubbock, Bart. F.R.S. BRAGG’S VEGETABLE CHARCQAL 
enry Farquhar, Esq. John Stewart Oxley, Esq. or PURE CARBON BISCUITS, a nutritious, pleasant, and healthfut diet, 
Charles Emanuel Goodhart, Esq. Benjamin Shaw, Esq. | which has produced great benefit and positive relief to thousands of sufferers 
Jas. A. Gordon, Esq. M.D, F.R-S. Marmaduke Wyvill, Jun. Esq. from indigestion, bile, acidity, foul breath, dyspepsia, heartburn, worms, &c. 
- There is medical testimony to its beneficial effect in these complaints.—Sold 
FINANCIAL POSITION. in tins, 1s., 2s., 4s., and 8s. each, by all chemists, and hy the manufacturer, 
Total Amount Insured, with Bonus Additions . . £3,007,431 J. L. BRAGG, 14 (late 2), Wigmore Street, Cavendish Square. 
Liability on the same at 3 percent. Interest . . 846,712 es eS me 4 zt 
Accumulated Funds. . . . . . Diet aks 1,227,253 
Annual Revenue from Premiums + £92,787 SPENCER’S PULMONIC ELIXIR. 
55 from\Interest . 3 - . 57163 
149,950 — — - — 
The whole invested in Government, Real, and other first-class Securities, : . : 
in addition to which the assured have the guarantee of a large and wealthy WHENa person takes cold immediate relief 
proprietary. may be secured by the use of SPENCER'S. PULMONIC ELIXIR. {t 
For Prospectuses and Forms of Proposal apply at the Offices as above, or | possesses every property which can be beneficial in cases of colds, coughs, 
to the Agents of the Company. asthma and all complaints of the chest and lungs. Spencer’s Pulmonic Elixir 
ROBERT TUCKER, may be had of all the principal druggists and medicine vendors throughout 
Secretary and Actuary. the world, in. bottles at 1s. 14d. and 2s. ga. each, 
