204 NCTICES OF THE MEETINGS [May 21, 
chemical combination of particles of the same nature as the formation 
of a compound substance, and that the two classes of bodies had a 
similar molecular constitution.* By the phenomena of allotropy, 
other analogies are brought out between them, which lead to a 
similar belief. The similarity is so great between the facts in the 
two cases, —they are produced by the same means, by the alteration 
of temperature and by chemical action, —they are attended with the 
same evolution of heat, —that it is reasonable to refer them to the 
same cause. In the case of the compound substance we have the 
most direct evidence that the allotropic conversion is the re- 
combination of the particles of the substance and the transition 
from one chemical type to another. The inference is that the 
change in the case of the elements is of the same nature, and that 
phosphorus and sulphur are molecular groups capable of this re- 
arrangement and re-distribution. 
[B. C. B.] 
In the Library were exhibited : — 
Sulphur in its Native, Crude, Refined, Commercial, and Pharmaceu- 
tical Forms. [Exhibited by Mr. 8. Highley, jun.] 
Cardinal Wiseman, from the Bust by Mr. C. Moore, in Machine 
Sculpture, by Mr. Cheverton. 
Various Groups in Parian. [Exhibited by Mr. Addey.] 
Ancient Egyptian Ear ornaments ; — Etruscan ear-rings, and sarco- 
phagus ; — Roman bulla, fibula, spoons, ear-rings ;—Saxon clasps, 
fibula, and boss of shield ; — Celtic gold armilla, and fibula; bronze 
armilla; silver armilla; Saxon portions of the Mancus, Cuer- 
dale; — Ancient carvings in bone. [Exhibited by W. Chaffers, 
Esq., F.S.A.] 
Testimonial (in Silver) to the 60th Rifles, by Major Moore. [Ex- 
hibited by Messrs. Hunt and Roskell.] 
Portrait of Lady Bryant, by J. Z. Bell, Esq. 
Minerals, and Sulphur Casts from R. I, Museum. 
* See on this subject the Author’s Paper in the Philosophical Transactions, 
1850, ‘on the Condition of certain Elements at the moment of Chemical 
Change.” 
