191 



In De la Sagra's work on Cuba, all three species are thrown to- 

 gether, and called Merula minor. In Audubon, correct descrip- 

 tions are given of two species, but the habits, locality, &c. of the 

 third, are given as those of M. solitaria. 



The specific marks of the three species may be briefly summed 

 up: 



Merula Wilsonii. Uniform foxy color ; breast clouded rather 

 than spotted ; common in New England and to the north ; not 

 found in Pennsylvania except in its migrations ; nests in bushes ; 

 eggs blue, unspotted. 



Merula solitaria. Rufous brown, back tinged with olive ; tail 

 rufous without the olive ; cinnamon spot on the under part of wing ; 

 breast deeply spotted on a white ground ; tail slightly forked. 

 Passes north early in April ; a northern species, rarely breeding 

 so far to the south as Massachusetts ; nests on the ground ; eggs 

 bright green, unspotted. 



Merula olivacea, Brewer. Back uniformly olive brown, no 

 tinge of rufous ; tail uniform with the back ; ground color of breast 

 salmon, strongly spotted ; tail even ; nests on trees ; eggs spotted 

 with brown, on a blue ground ; most abundant in the State of Penn- 

 sylvania and to the south. 



A paper from Mr. J. E. Teschemacher was read, as fol- 

 lows : 



"A parcel of the Beryls from Ackworth, N. H., having arrived 

 here lately, I have had an opportunity of examining them in quan- 

 tity, and have found, on the smoky quartz in which many are em- 

 bedded, the mineral Uranium, both in green and yellow cubic 

 crystals and in the state of yellow oxide. This not being men- 

 tioned in the recent works of Dana and Alger, is reason for think- 

 ing the locality new for Uranium. 



Whether the dark yellow color of many of these Ackworth 

 beryls, particularly those in the dark quartz above mentioned, may 

 not be derived from this substance, is perhaps worth enquiry ; but 

 the chief purport of this communication is to draw attention to the 

 fact, that all the appearances of this mineral, Uranium, at Ack- 

 worth, are so very similar to those of its appearance in the Tour- 

 maline locality at Chesterfield, that a close comparison of the two 

 localities would seem to be an object of considerable interest to 



