Jan. 9, 1879] 



NATURE 



Ixxvi'i 



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THURSDAY. Janl-ary 9. 

 Royal Society, at 8.30. — Researches on the Action of Organic Substances 

 on the Ultra-violet Rays cf the Spectrum: W. N. Hartley. — On the 

 Electro-magnetic Theory of the Reflection and Refraction of Light : G. F. 

 Fiugerald. — On Dry Fog: Dr. Frankland. — Note on the Inequalities of 

 the Diurnal Range of the Declination Magnet as recorded at Kew Obser- 

 vatory : Prof. B. Stewart and \V. Dodgson. — Some Experiments en 

 Metallic Reflection : Sir John Conroy. 

 Mathematical Society, at 8. — On a Theorem in Elliptic Functions : 

 Prof Cayley. F.R.S.— On a New Modular Equation: Prof. H. J. S. 

 SmitB, F.R.S. 

 London Institittion, at 7. — The English Stage : Prof. H. Morley. 

 Royal Institution, at 3. — Juvenile Lecture; A Soap Bubble: Prof. 

 Dewar. 



FRIDAY, January 10. 

 Quekett Microscopical Club, at 8. 



SUNDA Y. January 12. 

 Sunday Lecture Society, at 4.— Anaestheuc Sleep (Second Lecture): Dr. 

 B. W. Richardson. 



MONDAY, January 13. 

 London Institution, at 5. — Good and Bad Etymology : E. B. Tylor. 

 Medical Sociktt, at 8.30 



TUESDAY, January 14. 

 Royal Institution, at 3. — Animal Development : Prof. Schafer. 

 Zoological Society, at 8.30. — On the Habits and Changes of Plumage of 

 Humboldt's Penguin : A. D. Bartlett. — On the Anatomy of hytena 

 crocuta : Dr. Morrison Watson and Dr. Alfred H. Yoimg. — On a Collec- 

 tion of Birds made by Mr. Huebner, on Duke of York Island and New 

 Britain : Dr. O. Finsch, C.M.Z.S. 

 West London Scientific Associ.^tion, at 8. 



WEDNESDAY, January 13. 

 Society of Arts, at 8.— Automatic Couplings : T. A. Brocklebank. 

 Meteorological Society, at 7.— Annual Meeting. 

 Croydon Microscopical Club, at 8.30. — -Annual Meeting. 



THURSDAY, J.\nlary 16. 

 Royal Society, at 8. 30. . 

 LiNNEAN Society, at 8.— On the Colchlcaceae and Aberrant Tribes rf 



LiliacesE : J. G. Baker. 

 London Institution, at 7. — Man's Power of Modifying External Nature: 



Prof. RotTeston. 

 Royal Institution, at 3.— Electric Induction: J. E. H. Gordon. 



FRIDAY, January 17. 

 Royal iNSTiTtn-iON, at 9. — Electric Light : Prof. Tyndall. 



SATURDAY, January 18. 

 Royal Institution, at 3. — Reptilian Life : Prof. Seeley. 



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