70 



November 27, 1848. 



J. B. YATES, Esq., in the Chair. 



Messrs. P. M. Dove and G. B. Edwards were elected 

 Members of the Society. Besignations were received from 

 Messrs. Balleny and Green. 



Mr. Byerley showed specimens of the egg cases of the 

 Willow Coccus, and described the manner in which they were 

 formed. It appeared that the insect first attached her body by 

 a pointed proboscis to the bark of the willow tree, then laid 

 her eggs and cemented her body over them, after which she 

 died, leaving her body as an external covering and protection 

 to the eggs until the time of hatching arrived. 



Mr. Archer exhibited a specimen of Specular Iron Ore 

 from Cumberland, equal in beauty to that procured from the 

 Island of Elba. 



Also read a letter from Mr. Alger, of Boston, with an ac- 

 count of a new mineral, called Arkenside, which had not then 

 been analysed. 



Also exhibited a fossil, which he had procured in Derbyshire, 

 of the genus Proditcta. Between the upper and lower valves 

 there was a deposit of carbonate of hme, and resting upon tins 

 were cubes of fluor spar. This proved that the deposit of the 

 fluate of hme was subsequent to the existence of the fossil. 

 He believed that only one other similar specimen had been 

 hitherto described. 



Mr. Gray exhibited a fragment from the Millstone Grit of 

 Yorkshire. The stone had been sent for building purposes to 

 the Music Hall, and presented on one surface a mammalated 

 nnd irregular impression, about four feet square. The mark- 



