Dec. 5, 1878] 



NATURE 



XXXVU 



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THURSDAY, December 5. 



Royal Society, at 8.30. — On the Illumination of Lines of Molecular Pres- 

 sure, and the Trajectory of Molecules : W. Crookes, F. R. S. — On a 

 Machine for the Solution of Simultaneous Linear Equations: Sir W. 

 Thomson, F.R.S. 



Society of Antiquaries, at 8.30. — Portrait of Charles Brandon, Duke of 

 Suffolk : Everard Green, F.S.A. — Hoard of Bronze Objects frcm Yattea- 

 don, Berks : John Evans, D.C.L., F.S.A. 



LiNJJEAN Society, at 8.— Note on Gardenia turgida, Roxb. : Chas. B. 

 Clarke. — Geographical Distribution of Indian Freshwater Fishes. Part III. 

 Conclusion: Dr. Francis Day. — Memorandum respecting the Growth of 

 Melocactus communis ! Dr. W. B. Kesteven. — On some Coleoptera Col- 

 lected by Chas. Danvin, of Interest as regards Insular Fauna: F. H. 

 Waterhouse. — Remarks on a New British Moss : Ed. Morell Holmes. — 

 Mollusca of Challenger Expedition. No. II. (the Genera Seguinzia, 

 Bassfllissa, and Gaza) : Rev. R. Boog Watson. 



Chemical Society, at 8. — The Processes and their Comparative Value for 

 Determining the Quantity of Organic Matter in Potable Waters : Dr. Tidy. 

 — Researches on the Action of the Copper-Zinc Couple on Organic Com- 

 pounds : Dr. Gladstone and Mr. Tribe. — On a New Gra\'imetric Method 

 for the Estimation of Jlinute Quantities of Carbon : Dr. Dupre and Dr. 

 Hake. 



LoNDO.v Institution, at 7. — Present Tendencies of English Art : J. Ccmjrns 

 Carr. 



FRIDAY, December 6. 



Geologists' Association, at 8. — On the so-called "Crater Necks" and 

 "Volcanic Bombs" of Ireland: Mattieu Williams. — On the Volcanic 

 Region of Auvergne, Illustrated by Specimens of Minerals and Diagrams : 

 W. F. Black, F.G. S.Ed. 



SUNDAY, DECE.MBER 8. 



Sunday Lecture Society, at 4. — Discoveries by the Spectroscope : Channel 



Law. 



MONDAY, December 9. 

 London Institution, at 5.— Self-defence among Plants : Francis Darwin. 

 Society of Arts, at 8. — Mathematical Instruments : W. M. Williams. 

 Medical Society, at 8.30. 

 Royal Geographical Society, at 8.30. — The Swedish Expedition; the 



Dutch Arctic Expedition ; the Route for Future Polar Discovery : C. R. 



Markham,C.B., F.R.S. 



TUESDAY, December 10. 

 West London Scientific Association, at 8. 

 Anthropological Institute, at 8. — Finds in Midiaa : Capt. Richard F. 



Burton. — Notes on Skulls from Midian : Prof. R. Owen, and C. Carter 



Blake. — On Left-Handedness : Dr. Henry Muirhead. 

 WEDNESDAY, December ii. 

 Royal Microscopical Society, at 8. — On Oecistes spha^ii (a New 



Species) and other Rotifers : Dr. Hudson. — On a New Microspectroscope 



without a Slit: F. H. Ward.— On Hoffman's New Form of Camera 



Lucida: F. Crisp, LL.B., &c. 

 Society of Arts, at 8. 



THURSDAY, December 12. 

 Royal Society, at 8.30. 

 London Institution, at 7. — Wingless Birds, Fossil and Living : Prcf. 



Flower. 

 Society of Arts, at 8. — Chemical Section. 

 Mathematical Society, at 8. — On Motion : H. Perigal. — On Forms 



of Numbers determined by Continued Fractions: S. Roberts, F.R.S. — 



On a Graphic Construction of the Powers of a Linear Substitution ; 



Prince Camilla de Polignac. 



SATURDAY, December 14. 

 Physical Society, at 3. — On a Condenser of Variable Capacity : C. Boys. 



— On a Differential Air Thermometer : Dr. O. J. Lodge. 



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