458 Royal Society. 



stone of Tilgate Forest, in Sussex. By Gideon Mantell, 

 F.L.S. M.G.S. &c. — An experimental inquiry into the nature 

 of the radiant heating effects from terrestrial sources. By 

 Baden Powell, M.A. F.R.S. of Oriel College, Oxford. 



No. I. oi Annulosa Javanica ; or. An Attempt to illustrate 

 tlie Natural Affinities and Analogies of the Insects collected in 

 Java by Thomas Horsfield, M.D. F.L. & G.S., and depo- 

 sited by him in the Museum of the Honourable East India 

 Company. By W. S. MacLeay, Esq. M.A. F.L.S. &c. &c. 



This work, which is intended to contain systematic descrip- 

 tions of all the Insects collected by Dr. Horsfield in Java, is 

 to be published in numbers. The species are to be arranged, 

 as nearly as possible, according to their natural affinities; and 

 in order to make this, the important part of the science, more 

 clear, the descriptions are to be interspersed with such leading 

 observations on the economy and anatomical structure of the 

 families, as may render the work interesting to naturalists in 

 general, as well as to the entomologist. 



The second number is now in progress for publication, and 

 will contain the whole oftheColeoptera having luliform larvae. 



The Insects described are arranged in the Museum of the 

 Honourable East India Company, where it is stated they may 

 be inspected under the regulations established at their library. 



We shall have to recur to this valuable and interesting work 

 in a future number, as it contains much that is of great im- 

 portance to those who take an interest in general views of 

 Natural Arrangement. 



Part I. of Dr. Alex. Jamieson's New Practical Dictionary 

 of Mechanical Science, embellished with many hundred en- 

 gravings on copper and wood. 



Preparing for Publication. 

 Mr. G. Poulett Scrope has in the press A Treatise on Vol- 

 canoes, and on their Connexion with the History of the Globe : 

 in one octavo volume, to be illustrated by plates and numerous 

 ensravinffs on wood. 



LXXV. Proceedings of Learned Societies. 



ROYAL SOCIETY. 



'X'HE following papers have been read during the present 

 -*■ month : 



June 2. — Microscopical observations on the materials of the 

 brain, ova, and testicular secretions of animals, to show the 

 analogy that exists between them. By Sir Everard Home, 

 Bart. V.P.R.S. 



June 9. 



