JRoyal Society. 4i5 



Samouelle's Entomological Cabinet. No. III. London, March 1832, 

 12mo. Six coloured Engravings, accompanied with Descriptions. 

 Each Number of this little work contains coloured engravings of six 

 species of insects, and the appropriate descriptions. The former are 

 characteristic of the objects represented, and the latter, though perhaps 

 too concise, appear to be accurate. The present Number figures and 

 describes Carabus Hortensis, Fabr.; Cleniocerus aulicus, Leach; Gom- 

 phoceros rufus, Leach; Gomphus vulgatissimus, Leach; Smerinthus 

 Tilice, Latr., and Eeduvius personatus, Fabr. A few anecdotes of some 

 of these insects are given ; but as the work is principally intended for 

 young persons, and others only commencing the pursuit of practical 

 entomology, we think Mr. Samouelle would do wisely to introduce 

 more information respecting the habits and oeconomy of the insects 

 he describes, as these subjects are especially interesting to younger 

 students. We observe that Gomphus vulgatissimus,'Lea.ch, {Libellula 

 vulgatissima, Linn.) is stated to be uncommon near London, and that 

 the author never met with more than one living specimen, which was 

 taken near CoombeWood in Surrey. It may therefore be interesting 

 to entomologists to remark that between seven and eight years since, 

 we observed this insect in a green lane or road leading from Frinds- 

 bury, near Rochester, to Cowling Castle, in Kent; and that, about 

 twenty years ago, we believe two living specimens were taken some- 

 where between Islington and Clapton, near London. Upon the 

 whole we think that the Entomological Cabinet is well calculated to 

 advance the cultivation of entomology ;and from its cheapness, com- 

 bined with its competent accuracy, we think it likely to promote the 

 success of young students of that science. 



LXII. Proceedings of Learned Societies. 



KOYAL SOCIETY. 



December 8, 1831.— 'T'HE reading of a paper, entitled " Experi- 

 A mental Researches in Electricity," by 

 Michael Faraday, Esq. F.R.S. was commenced. 



December la. — The reading of Mr. Faraday's paper, entitled 

 "Experimental Researches in Electricity," was concluded. 



This paper is divided into four parts: the first being on the In- 

 duction of Electric Currents* ; the second, on the Evolution of Elec- 

 tricity from Magnetismf; the third, on a new Electrical Condition of 

 Matter; and the fourth, on Arago's Magnetic FhaenumenaJ. 



A paper was read, entitled " Some Remarks on the internal Struc- 

 ture of the Platypus Anatinus [Ornithorliyncuspaiaduxvs, Blum.)." By 

 Richard Griffin, Esq. Communicated by Dawson Turner, Esq. F.R.S. 

 Having an opportunity of examining two N()eciinens of the Orni- 

 thorhyncus, the one male, the other female, belonging to the Norfolk 

 and Norwich Museum, the author found in the latter two large 

 mammary glands, one on each side of the chest, and covering nearly 

 the whole under surface of the animal ; numerous ducts proceeded 



• See p. 300. t Sec p. 301, \02. J See p. 401, 4G2. 



from 



