1871.] 



Presents. 



477 



Presents received April 20, 1871. 



Transactions. 



Batavia : — Koninklijke Natuurkundige Yereeniging in Nederlandsch 

 Indie. Natuurkundig Tijdschrift. Deel 29. An. 5, 6 ; Deel 30. 

 Afl. 1, 2 ; Deel 31. Afl. 4-6. 8vo. Batavia 1867-70. The Society. 



London : — Meteorological Office. Weather Reports, July 1 to Dec. 31, 



1870. fol. London. Quarterly Weather Report. Part 4. 4to. 

 London 1871. Barometer Manual, by R. H. Scott. 8vo. London 



1871. The Office. 

 Royal Medical and Chirurgical Society. Medico -Chirurgical Trans- 

 actions. Yol. XX., XXY. 8vo. London 1837-42. The Society. 



Yienna : — K. K. Geologische Reichsanstalt. Jahrbuch. Jahrgang 1870. 

 XX. Band. Nr. 4. 8vo. Wien. Yerhandlungen, Nr. 13-18. 8vo. 

 Wien 1870. The Institution. 



K. K. Zoologisch-botanische Gesellschaft. Yerhandlungen. Jahrgang 

 1870. Band XX. 8vo. Wien 1870. The Society. 



Besant (W. H.) Note on the Equilibrium of Flexible Surfaces. 8vo. 

 London 1 858. On Meunier's Theorem, and on the Curvature of Curves 

 in Space. 8vo. London 1863. Note on Tension. On a Metacentre in 

 a liquid of variable density. 8vo. London 1866. On a Class of Me- 

 chanical Problems. 8vo. London 1866. Note on the Nine-point 

 Circle. 8vo. London 1866. Geometrical Notes. 8vo. London 1866. 

 A Treatise on Hydromechanics. 8vo. Cambridge 1867 '. Elementary 

 Hydrostatics. 12mo. Cambridge 1867. Conic Sections treated Geo- 

 metrically. 12mo. Cambridge 1869. Notes on Roulettes and Glis- 

 settes. 8vo. Cambridge 1870. Note on the Envelope of the Pedal 

 Line of a Triangle. 8vo. London 1869. Mathematical Notes. 8vo. 

 London 1870. The Deduction of Euler's Equations from the La- 

 grange Equations. 8vo. London 1871. The Author. 



Plateau (Eelix) Recherches Physico-Chimiques sur les Articule's aqua- 

 tiques. Partie 1. 4to. Bruxelles 1870. The Author. 



Poncelet (J. Y.), Eor. Mem. R. S. Introduction a la Mecanique Industrielle 

 Physique ou Experimentale ; troisieme edition, publiee par X. Kretz. 

 8vo. Paris 1870. The Editor. 



Roscoe (William) Monandrian Plants of the Order Scitaminea3, chiefly 

 drawn from living Specimens in the Botanic Garden at Liverpool, 

 fol. Liverpool 1828. James Yates, E.R.S. 



Three Photographs of the Moon taken at New York, Jan. 8th, March 4th 

 and 6th, 1865, by Lewis M. Rutherfurd. Photograph of the Solar 

 Spectrum by the same. L. M. Rutherfurd, Esq. 



