Jan. 1 6, 1879] 



NATURE 



Ixxxv 



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DIARY OF SOCIETIES. 



London 



THURSDAY, January 16. 



Royal Socisty, at 8.30. — On some Points connected with the Anatomy of 

 the Skin ; and. On Hyaline Cartilage and Deceptive Appearances Pro- 

 duced by Reagents, as Observed in the Examination of a Cartilaginous 

 Tumcur of the Lower Jaw : Dr. G. Thin. — Volumetric Estimation of 

 Sugar by an Ammoniated Cupric Test giving Reduction without Precip:- 

 taticn : Dr. Pa\-y, F. R.S. — On the Effect of Strong Induction Currents 

 upcn the Structure cf the Spinal Cord: Dr. W. M. Ord. — Concluding 

 Observations on the Lccomotor Sj'Stem cf Medusae : G. J. Romanes. 



S3CIETY OF Antiquaries, at 8.30. — Sepulchral Remains on the Coast of 

 Algeria : Major Heales. — Office of King's Advocate-General : E. W. 

 Brabreok. 



LiNNEAN Society, at 8.— On the Colchicaceae and Aberrant Tribes of 

 Lihacese : J. G. Baker. 



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

 Prof. Rolleston. 



KoYAi Instxtution, at 3.— Electric Induction: J. E. H.Gordon. 



FRIDAY, J.^NUARY 17. 

 Royal Institdtiox, at 9. — Electric Light : Prof. TyndalL 



SATURDAY, January iS. 

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



SUNDAY, January 19. 



StWDAY Lecture Society, at 4.— Is Life Worth Having ? T. W. Rhys 

 Da\ids. 



MONDAY, January 20. 



London iNSTiTtrriON, at 3.— Health and Recreation : Dr. B. W. Richard- 

 son. 



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



Medical Society, at 8.30. — Second Letlsomian Lecture. 



Victoria iNSTrrirrE, at 8. — The Argument from Design: Dr. I. P. 

 Thcmpscn. — Genesis and Gejlogy : Rev. E. Duke. 



TUESDAY, January 21. 

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

 Anthropological Institute, at 8. — On Circumcision, its Significance, 



its Origin, and its Kindred Rites : Elie Reclus. 

 Society of Arts, at 8. — Retrospect and Prospect in Egj-pt : B. F. Cobb. 



WEDNESDAY, January 22. 



Geological Society, at 8. — On Community of Structure in Rocks of Dis- 

 similar Origin: Frank Ruttey. — Distribution of the Serpentine and Asso- 

 ciated Rocks with their Metallic Ores in XewfounQL-.id : A. Murray, 

 C M.G.— The Gold Leads of Nova Scotia : H. S. Poole, M.A. 



Royal Society ok Liter.ature, at 8. — On the Ogham Inscriptions and 

 on the Mushajjar Characters : CapL R. F. Burton. 



Society of Arts, at 8.— Modem Science of Economics : H. D. Macleod. 

 THURSDAY, January 23. 



Royal Society, at 8.30. — Researches on Chemical Equivalence, Part i: 

 Dr. Mills and T. W. Walton ; Part 2 : Dr. Mills and J. Hogarth,— Re- 

 searches ou Lactin: Dr. Mills and J. Hogarth. — On the Microrheometer : 

 J. B. Hannay.— Limest-ne as an Index of Geological Time: T. M. 

 Reade. — Preliminarj' Note on the Substances which produce Chromo- 

 spherlc Lines : J N. Lockyer. 



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



London Institittion, at 7.— Fauna and Flora of Prehistoric Periods : Prof. 

 Rollestcn. 



FRIDAY, January 24. 



Royal Institutio.v, at 9.— The Mirror of Japan : Prcf. Ayrton. 



Quekett Microscopical Club, at 8.— On the Crticating Threads of 

 Actnua parasitica: F. A. Bed well, M .A., F.R.M.S.— On a New Method 

 of Preparing a Dissected M jdel of an Insect's Brain, from Microscopic 

 Sections: t. T. Xewton, F.G.S. 



SATURDAY, }K^VK-Ry 25. 

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

 Physical Society, at 3. 



" EUDOLPH KOENIG, 



(DR. PHIL.) 

 MANUFACTURER OF 



ACOUSTICAL INSTRUMENTS. 



TO ILLUSTRATE THE L-U^'S 



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PARIS, 26, RUE DE POITTOISE. 



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PROF. TYNDALL'S "LESSONS IN 



ELECTRICITY." Complete Apparatus to illustrate the above, in 

 large Case, £1 loj. Pnce List post free. Book, is. td. post free. — 

 Stanley, Optician, Railway Approach, London Bridge, S. E. 



LIGHTNING CONDUCTORS. 



Experience, accumulated since the time of Benjamin Franklin, proTCf 

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JOHN NORMAN, 



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