476 Scientific Intelligence. 
11. The Garden, a “ Weekly Illustrated Journal of Gardening 
in all its branches,” is of about the size and extent of the Athen- 
zum, i. e., smaller than the Gardeners’ Chronicle, but of about the 
same number of pages, is published in London, and conducted by 
r. Wm. Robinson, who is so well and favorably known in his 
Parks and Gardens of Paris, his Alpine Flowers, Wild Garden, ete., 
as well as personally to those who had the pleasure of making his 
acquaintance during a recent visit he made to this country. The 
publication began toward the close of the last year, so that it is 
in its first volume; No. 17, the number for March 16, extends 
to p. 388. It covers a somewhat different ground from that of 
know it not as yet, by calling attention to it. We shall proba- 
ly have occasion to make some extracts, or at least should do so 
if we could find room. A. G. 
Ill. Astronomy. 
e two celebrated memoirs of Olbers and Bessel o 
These are followed by his own memoir, entitled, “ On the Stab 
of Cosmical Masses and the Physical Constitution of the Comets, 
tarting from the well known fact that water, mercury, and 
many other substances, even in the solid state, give off vapor, h 
certain amount, though of very low tension, and inferring from the 
characteristic odors of the metals, that they also, even at very low 
4 hough of an 
the latter will depend upon the mass of the body, that paps a 
* Ueber die Natur der Cometen Beitriige zur Geschichte und — fred 
Erkenntniss; von Johann Carl Friedrich Zéllner, Professor an der 1872 8yo. 
Fg? es X Tafeln, Leipzig, Verlag von Wilhelm Englemann. ; 
PP. c, 528. 
