1889.] Library. 145 



4. On Clebsclis transformation of the Hydrokinetic Equations. — By 

 Babu Asdtosh Mukhopadhyay, M. A., F. R. A. S., F. R. S. E. 



(Abstract.) 



The object of this note is to point out, bow the method of applying 

 Clebsch's transformation to obtain a first integral of the hydrokinetic 

 equations of Euler in the case of general rotational motion may be 

 materially simplified by means of Laplace's solution of linear partial 

 differential equations of the first order. It is also incidentally pointed 

 out that the three cases of irrotational motion, steady rotational motion 

 and general rotational motion, may be worked out by one uniform me- 

 thod. 



The paper will be published in full in the Journal, Part II. 



5. Notes on the Founder and the Founding of Calcutta, loith photo- 

 graphs and tracings of plans of the Town in 1753. — By T. R. Munro, Esq. 



Mr. Munro afterwards exhibited and explained some old tracings 

 of a Map of Calcutta, dating from 1753, and photographs of plans now 

 in the British Museum of the above date, and also one supposed to have 

 been drawn iu 1723 or 1724 — 



6. On a difficult passage in the Rigveda. — By Professor C. R, 

 Lanman, Harvard College, Cambridge, U. S. A. 



The paper will be published in the Journal, Part I. 



LIBRARY. 



The following additions have been made to the Library since the 

 Meeting held in February last. 



Transactions, Proceedings and Journals, 



presented by the respective Societies and Editors. 



Amsterdam. Koninklijk Zoologisch Genootschap " Natura artis Ma- 

 gistral' — Bijdragcn tot de Dierkunde, Aflevering 14 , J 5° (Gedeelte 

 1-2), und 16*. 



Angers. La Society d'Etudos Scientifiques d'Angers, Bulletin, 1886. 



Berlin. Der Gcsellschaft Naturforschcndcr Preuude zu Berlin, — 

 Sitzungs-Bcrichtc, Jahrgang 1888. 



