1888.] Presents. 45 



The effects of such a body in destroying the equilibrium of the 

 spheroid when the forced tide coincides with one of the free tides 

 form the conclusion of this paper. 



Presents, November 22, 1888. 

 Transactions. 



Cordoba : Academia Nacional de Ciencias. Boletin. Tomo X. 

 Entrega 2. Tomo XI. Entrega 1. 8vo. Buenos Aires 1887. 



The Academy. 



Delft : Ecole Polytechnique. Annales. Tome IV. Livr. 1-2. 4to. 

 Leide 1888. The School. 



Frankfort-on-the-Main : Senckenbergische Naturforschende Ge- 

 sellschaft. Bericht. 1888. 8vo. Frankfurt-am- Main. 



The Society. 



Halifax : Nova Scotian Institute of Natural Science. Proceed- 

 ings and Transactions. Vol. VII. Part 2. 8vo. Halifax 1888. 



The Institute. 



Lausanne : Societe Vaudoise des Sciences Naturelles. Bulletin. 



Vol. XXIII. No. 97. 8vo. Lausanne 1888. The Society. 



Leipsic : Astronomische Gesellschaft. Vierteljahrsschrift. Jahrg. 



XXIII. Heft 1. 8vo. Leipzig 1888. The Society. 



London : Anthropological Institute. Journal. Vol. XVIII. Nos. 



1-2. 8vo. London 1888. The Institute. 



Geological Society. Quarterly Journal. Vol. XLIV. No. 176. 



870. London 1888 ; List of Fellows, 1888. 8vo. London. 



The Society. 



London Mathematical Society. Proceedings. Vol. XIX. Nos. 

 321-327. 8vo. London 1888. The Society. 



Manchester : Literary and Philosophical Society. Memoirs and 

 Proceedings. Fourth Series. Vol. 1. 8vo. Manchester 1888. 



The Society. 



Paris : Societe de Geographic. Bulletin. Tome IX. Trim. 1-2. 



8vo. Paris 1888. The Society. 



Societe Philomathique. Bulletin. Tome XII. No. 3. 8vo. Paris 



1888. The Society. 



Vienna : K. K. Geologische Reichsanstalt. Jahrbuch. Bd. 



XXXVIII. Hefte 1-2. Svo. Wien 1888; Verhandlungen. 



1888. Nos. 8-13. Svo. Wien. The Institute. 



Journals. 



Annales des Mines. Ser. 8. Tome XIII. Livr. 1-3. Svo. Paris 

 1888. L'Ecole des Mines. 



