258 Presents. [Mar. 5, 



the earth's revolution round the sun appear opposite in the two hemi- 

 spheres. 



It might be supposed, as was done for the diurnal variation of magnetic 

 declination, that the directions of motion being opposite in the two hemi- 

 spheres, the amount of motion should diminish, and perhaps altogether 

 disappear, at the magnetic equator. This does not seem to be the case 

 for the annual law more than for the diurnal law, the range of the 

 mean oscillation from four years' observations at Makerstoun being about 

 l'-0, which is little different from that found for Trevandrum (0''33), the 

 difference of the directive forces being considered. 



The Society then adjourned over the Easter Recess to Thursday, 

 April'lGth. 



Presents received March 5, 1874. 

 Transactions. 



Berlin: Konigl. Preussische Akademie der Wissenschaften. Mo- 



natsbericht. February to December 1873. 8vo. The Academy. 

 Florence : E. Comitato G-eologico d'ltalia. Bollettino. Anno 1873. 



No. 5-8, 11, 12. 8vo. Firenze. The Institution. 



London : Society of Antiquaries. Archsoologia. Vol. XLIII. Part 2 ; 



Vol. XL1V. Part 1. 4to. 1873. The Society. 



Nijmegen : Nederlandsche Botanische Vereeniging. Nederlandsch 



Kruidkundig Archief. Verslagen en Mededeelingen. Tweede 



Serie. Deel I. Stuk 3. 8vo. 1873. The Society. 



Vienna : Anthropologische Gesellschaft. Mittheilungen. Band III. 



NT. 1-9. 8vo. Wien 1873. The Society. 



[Reports, Observations, <fec. 



Calcutta: Geological Survey of India. Memoirs. Vol. X. Parti. 

 8vo. 1873. Palseontologia Indica. Cretaceous Fauna of Southern 

 India. Vol. IV. 3,4. Jurassic Fauna of Kutch. Vol. I. 1. 4to. 

 1873. Eecords. Vol. VI. Part 1-4. 8vo. 1873. The Survey. 



Copenhagen : Universitet. Undersogelser over de Nebulose Stjerner 

 i Henseende til deres spektralanalytiske Egenskaber, af H. d'Ar- 

 rest. 4to. Kjobenhavn 1872. The University. 



Japan : Second Annual Report of the Director of the Imperial Mint, 

 Osaka, Japan, for the year ending 31st July, 1873. 8vo. Hiogo 

 1873. The Director. 



Konigsberg : Konigliche Universitats-Sternwarte. Astronomische 

 Beobachtungen, herausgegeben von E. Luther. Abtheilung 

 XXXVI. folio. Konigsberg 1870, The Observatory. 



