1 



294 Presents. [Nov. 24, 



I 



..)}.. {1 (*i-fr4t+ 



multiplied by 



^ t ^ , a tl ) . . . (At, + ap - (, . , 



which reduces to that formerly obtained when k is given the special 

 value 2. 



Presents, November 24, 1892. 

 Transactions. 



Berne: Naturforschende Gesellschaft. Mittheilungen. 1891. 8vo. 



Bern 1892. The Society. 



Calcutta: Asiatic Society of Bengal. Proceedings. 1891. Nos. 



710. 1892. Nos. 15. 8vo. Calcutta; Journal. Parti. 



1891. Nos. 23, 1892. Nos. 12. Journal. Part 2. 



1891. Nos. 23, 1892. Nos. 12. 8vo. Calcutta; Title 

 Page and Index for 1891, to Journal, Part 2. 8vo. Calcutta 



1892. The Society. 

 Cambridge : Philosophical Society. Transactions. Vol. XV. 



Part 3. 4to. Cambridge ] 892. The Society. 



Cambridge, Mass. : Harvard University. Bulletin. Vol. VII. 



No. 1. 8vo. [Cambridge] 1892. The University. 



Museum of Comparative Zoology, Harvard College. Bulletin. 



Vol. XXIII. No. 3. 8vo. Cambridge. The Museum. 



Dantzic : Naturforschende Gesellschaft. Schriften. Bd. VIII. 



Heft 1. 8vo. Danzig 1892; Geschichte der Gesellschaft, 



17431892. 8vo. Danzig 1893. The Society. 



Delft : Ecole Poly technique. Annales. Tome VII. Livr. 2 4. 



4to. Leide 1892. The School. 



Dublin : Royal Dublin Society. Scientific Transactions. Vol. 



IV. Ser. 2. Nos. 913. 4to. Dublin 1891; Scientific 



Proceedings. Vol. VII. Parts 34. 8vo. Dublin 1892. 



The Society. 

 Royal Irish Academy. Transactions. Vol. XXIX. Parts 



1719. 4to. Dublin 1891-92; "Cunningham Memoirs." 



No. 7. 4to. Dublin 1892. The Academy. 



Geneva: Institut National Genevois. Bulletin. Tome XXXI. 



8vo. Geneve 1892. The Institute. 



Gloucester: Cotteswold Naturalists' Field Club. Proceedings. 



Vol. X. Part 3. 8vo. Gloucester [1892], The Club. 



