. Discovery. Science. ADVERTISEMKXTS Nature's Panorama Never ceasing, gives an endless source of delight, interest, and curiosity. There is the nightly procession of co oured stars, double stars, variable stars, multiple stars, and stars that seem al resl ; and those glorious great Star Clusters, and the Milky Way ! What wonders await the user ol a Telescope directly he puts his eye to the Instrument! You can enjoy a!l this perpetually without continuous outlay. An excellent instrument to commence with is the WATSON " Maia " Educational Telescope \ ou may purchase the Telescope by a
. Discovery. Science. ADVERTISEMKXTS Nature's Panorama Never ceasing, gives an endless source of delight, interest, and curiosity. There is the nightly procession of co oured stars, double stars, variable stars, multiple stars, and stars that seem al resl ; and those glorious great Star Clusters, and the Milky Way ! What wonders await the user ol a Telescope directly he puts his eye to the Instrument! You can enjoy a!l this perpetually without continuous outlay. An excellent instrument to commence with is the WATSON " Maia " Educational Telescope \ ou may purchase the Telescope by a deposit of 27/6, and eleven monthly payments of 22 6 to com- plete the transaction ; or for cash the price complete is £12 10s. Watsons^ 'DHaia Educational. Specification : Solid brass body tube, as illustrated, rack and pinion focusing adjustment, sliding draw tube, fitted with specially selected 3-in. diameter object-glass, an astronomical eye-piece o( any desired power, with dark glass for soUr observation. The whole mounted on a stand of entirely new design, giving universal movements. Price complete as above. £12 10s. ILLUSTRATED DESCRIPTIVE CATALOGUE AND SECOND- HAND LISTS SENT POST FREE ON REQUEST. W. WATSON & SONS, LTD. Telescope Manufacturers Wholesale and Retail and to the British and many Foreign Governments 313 High Holborn, London, V/.C. Works: BARNET. Herts. ESTABLISHED 1837 Messrs. Longmans' List PRACTICAL PHYSICAL CHEMISTRY liv \A\ni;K I'INDLAY, ('lieniisliy. ^nivLâ¢r^it\' of Aberdeen. Fourth Edition, Revised and Enlarged. Witli 115 Sio. Profes of TEXTBOOK OF INORGANIC CHEMISTRY Hy (.. .S. Nkwui, New and Enlarged Edition. \\ ith numerous Diagrams. Cii.)V\n S\o. 8». A TREATISE ON LIGHT Hv R. A. Willi 32S 12i. 6d. net. ELECTRICITY AND MAGNETISM FOR ADVANCED STUDENTS I!y S. (.;. SiAKLiNG, , .\., ..t the Departmeiu of Physics i
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