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meeting, Friday, January 24. Londres, 1851; 1 broch. in-8. 



Observations on days of unusual magnetic disturbance, made 

 at the british Colonial magnetic observatories , under the Depart- 

 ment of the Ordnance and admiralty. Printed by the british 

 government under the superintendence of lieut.-colonol Edward 

 Sabine. London, 1851; 1 vol. in-4. 



The transactions of the entomological, Society of London. 

 Vol. V, part 6, 7, 8, 9. New series, vol. I, part \ , 2. Londres, 

 1849-1850; 6 broch. in-8. 



Athenaeum. Rules and regulations and list of members 1850. 

 Londres, 1850; 1 vol. in-12. 



Supplement, to the catalogue of the library of the athenaeum. 

 Printed in 1845; with a classified index of subjects. Londres, 

 1851; 1 vol. in-8. 



The quarterly journal of the geological Society. Edited by the 

 assistant-secretary of the geological Society. February 1851, 

 n 25. Londres ; 1 vol. in-8. 



77je quarterly journal of the chemical Society. Vol. Ill an IV, 

 n os XI-Xll. Londres, 1850-1851 ; 2 vol. in-8. 



The numismatic chronicle, and journal of the numismatic 

 Society. Edited by John Yonge Akerman. October 1850, n 50. 

 January 1850, 11 51. Londres; 2 broch. in-8. 



Report of professor Alexander D. Bache, super intendant of 

 the Coast survey, showing the progress of that work for the year* 

 ending October 1848 and 1849; 2 broch. in-8. 



Transaction* of the Cambridge philosophical Society. Vol. IX. 

 Part 1. Cambridge, 1851 ; 1 vol. in-4. 



Journal of the Academy of natural science of Philadelphia. 

 New series. Vol. II, part. 1. Philadelphie, 1850, November; 

 1 vol. in-4. 



The American journal of science and arts. Conducted by pro- 

 fessors B. Silliman, B. Sillimann Jr., and James D. Dana, aided 

 in the departements of chemistry and physics by D r Wolcott 

 Gibbs. N os 50, 31 , January 1851. Newhaven; 1 vol. in- 8. 



