266 Royal Society of London. 
These engravings, it is expected, will not only prove of © 
great utility to the astronomer, but lead to very important 
speculations in natural philosophy. The remarkable 
changes of forms in various eminences, the different radi- 
ations of light observable at one age of the moon and not 
at another, with its numerous surprising phawnomena, are 
in these plates faithfully and fully expresssed, so as to 
form a work, it is presumed, highly interesting in the 
departments either of astronomy or natural philosophy. 
The price of the work, to subscribers only, is five gui- 
neas, half of which sum is paid at the time of subscribing, 
when the first plate of the work is also delivered. ane 
tion will accompany the second plate. | 
Dr. Herdman has in the press, his second discourse on 
the interesting subject of The Management of Infants and 
the Treatment of their Diseases—written in a plain fami- 
har style, to render it intelligible and useful to all mothers, 
and those who have the management of infants. : 
We have great pleasure in announcing that the lectures 
which Mr. Landseer read at the Royal Institution on the 
art of engraving, are in the press. We believe Mr. L. is 
the first person who has lectured in England on that inter- 
esting and valuable art; and as his discourses were listened 
to with considerable approbation, and attended by nume- 
rous audiences at the Institution, we have reason to antici- 
pate their favourable reception with the public. 
XLII. Proceedings of Learned Societies. 
ROYAL SOCIETY OF LONDON. 
Nov. 27. The Right Honourable the President in the chair. — 
—Continuation of Mr. Davy’s Bakerean lecture on the 
«© Chemical. Agency of Electricity.” The third and fourth 
sections were read, consisting chiefly of numerous isolated 
experiments, conducted with great accuracy, on the effects 
of 
