clxii 



NATURE 



\Sept. II, 1879 



BUDOLPH KOENIG, 



(DR. PHIL.) 

 MANUFACTURER OF 



ACOUSTICAL INSTRUMENTS. 



TO ILLUSTRATE THE LAWS 

 AND TO PRODUCE THE PHENOMENA OF SOUND. 



PARIS, 26, RUE DE PONTOISE. 



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SECOND EDITION, 



GRIFFIN'S 



CHEMICAL HANDICRAFT. 



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A CATALOGUE OF CHEMICAL APPARATUS; 



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Demy 8vo, 480 pp.. Illustrated with 1,600 Woodcuts. 



Most Complete and Cheapest List of Apparatus. 



JOHN J. GRIFFIN and SONS, 22, GARRICK STREET, 

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e 0. TISLEY & Co 



OPTICIANS, ■' 

 172, BROMPTON ROAD, S.W. 



(Close to South Kensington Museum). 



THE PHONEIDOSCOPE 



An Instrument for Observing the Colour-Figures of Liqmd Films under the 

 action of Sonorous Vibrations. 



Being a visible demonstration of the Vibratory and Molecular Motion of a 

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 The PHONEIDOSCOPE, with 3 Discs, Bottle of Solution, Descriptive 

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MANUFACTURED AND SOLD WHOLESALE AND RETAIL BY 



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TELEPHONIC ELECTRICITY. All Materials supplied for experi- 

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Price Lists of Electrical and Acoustic Apparatus, with Drawings and 

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HOLLOWAYS OINTMENT 



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For BAD BREASTS, OLD WOUNDS, and SORES. If 

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CHEMICAL & PHYSICAL APPARATUS 



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NEW ILLUSTRATED CATALOGUE of ELECTRI 



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EDWARD PATERSON, 



Electrical Engineer and Scientific Apparatus Manufacturer, 



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Experiments in Electric Lighting carried out. 



ElKiricul Affaraius of all Descriptions for Lecture Purposes Loaned n 



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do 



do 



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ELECTRICAL APPARATUS. -- Science 



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LABORATORY, 38, GRACECHURCH STREET, LONDON, E.G. 



A. ANTHONY NESBIT, F.C.S., 



WATER ANALYST, 



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Properly cleansed bottles for the reception of samples sent to any part of 

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By JOHN FISKE, M.A., LL.B. 



OUTLINES of COSMIC PHILOSOPHY, 



based on the Doctrine of Evolution, with Criticisms on the Positive 

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GEORGE HUMPHREYS, Actuary and Secretary. 



WANTED, Clean Cop'es of NATURE, No. 472, 

 for Novemler 14, 1878. Address — Office of 

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