122 



tlie share which these affinities take in all the changes to which the 

 elements composing organised bodies are subjected, from the time of 

 the first separation of carbon from oxygen, which is essential to 

 vegetable life, till the restoration of all the elements thus employed, 

 by the aid of oxygen taken into the body, to the condition of inor- 

 ganic compounds, in the excretions that are continually thrown off 

 from living animals. 



The following Donations to the Library were announced : — 



Astronomische Nachrichten. Edited by Professor Schumacher. 



Nos. 560 to 586, — By the Editor. 

 Astronomische Beobachtungen auf der Koniglichen Universitats 



Sternwarte in Konigsberg, von F. W*. Bessel fur 1835 ; und 



von A. L. Busch fur 1836. — By the Authors. 

 Observations on the Mortality of the Scottish Widows' Fund and 



Life Assurance Society, from 1815 to 1845. By James Beg- 



bie, M.D., F.R.S.E.— 5y the Author. 

 Niewe Verhandelingen der Eerste Klasse van het Koninklijk-Neder- 



landsche Instituut van Wetenschappen, Letterkunde en Schoone 



Kunsten te Amsterdam. Deel 12, Stuk 3. — By the Institute. 

 The American Journal of Science and Arts. Conducted by B Silli- 



man junior, and James D. Dana. For January 1847. — By 



the Editors. 

 Astronomical Observations made during the year 1845 at the 



National Observatory, Washington, under the direction of M. 



F. Mauray, A.M., Lieut. U.S. Navy, Superintendent. — By 



the U.S. Naval Observatory. 

 Ricerche Fisico-Chimico-Fisiologiche sulla Luce del Prof. Abate 



Francesco Zantedeschi. — By the Author. 



