64 



Presents. 



[May 2. 



Soret (J. L.) Illusions que produisent le Dessin et la Peinture. 8vo. 

 [ Geneve] 1888. With Five other Excerpts in 8vo. 



The Author. 



Sturm (R.) Ueber die Zahl und Lage der singularen Punkte bei 

 den Strahlencongruenzen zweiter Ordnung. 8vo. [Gottingen'] 

 1888. The Author. 



Tesaf (F.) Analysis Gravitatis Terrestris. 4to. Pragce 1888. 



The Author. 



Waterhouse (Lieut. -Col. J.) Annual Address and Review to the 

 Asiatic Society of Bengal. 8vo. Calcutta 1889. The Author. 



Weise (W.) Yield Tables for the Scotch Pine. 8vo. London [1888]. 



Dr. W. Schlich. 



Whitehead (J. T.) A Historical Sketch of the Congregation now 

 meeting in the New Gravel-pit Church, Hackney, and of its 

 successive Ministers. 8vo. London 1889. [Contains Biographical 

 matter relating to Dr. Richard Price, F.R.S., and Dr. Priestley, 

 F.R.S.] The Author. 



Woodward (H.), F.R.S., and T. R. Jones, F.R.S. Some Devonian 

 and Silurian Fossils of "North America. 8vo. \London\ 1888. 



The Authors. 



Autograph Letter of Rev. John Swinton, F.R.S. (1768), and copy of 

 a Letter from Leibnitz to Oldenburg (1676). Mr. J. D. Enys. 

 Etched Portrait of Dr. T. Graham Balfour, F.R.S. 



Dr. T. Graham Balfour. 



