— <)H — 

 G. Dal cav. iiub. Acliille de Zigiio. 



Siii Urreuijiirassici (Idle Alpi rcnete e sulla Flora 

 fossile che li dislingue, Meinoria. Padovaj 1832, in 8. di 

 pag. 10. 



rj. Diiir Isfituto Smithsoniano di Washington negli Sta- 

 li-Uniti d' America. 



Fourth annual Fiepurt of the Board of Rcijeuts nf Uht 

 Sinilhsnnian Institution to the Senate and Houseof Hepre- 

 si'iilafiiK's, shnwiufi the operations, expenditures, and con- 

 dilion of the Institution dnrin(j tlie year 1849. Wnsliiny- 

 toii, 1850, in 8. di pag. G4. 



Idt'm, fifth annual Report for the year 1850. Wa- 

 shington, 1851, in 8. di pag. 526. 



Report of the Commissioner of patents f)r the year 

 1850. Washington, 1851, in 8. Pari. I. Jrls and manufa- 

 ctures; — Part. II. Jgriculture. 



Meteorolofjical Register for fweloe years, from 1831 to 

 \dii2 inclusive: compiled from observations made by the 

 officers of the medical Department of the Army at the 

 military posts of the United Stales, prepared under the di- 

 rection of Thomas Lawson surgeon general United States 

 Jrmy. Washington, 1851, in 8. di pag. 524. 



Letter from the Secretary of the Treasury, commu- 

 nicating a report of the computation of tables, to be used 

 with the hydrometre recently adopted for use in the United 

 States custom-hones, made under the superintendence of 

 professor J. D. Bache, by professor R. S. Mc Culloh. in 8. 

 with pi, di pag. 108. 



Register of periodical phenomena of animal and 



