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Proceedings of the Werner'ian Natural History Society. 



1835, Jan. 24. — Professor Jameson, P. in the Chair. — A 

 paper by Mr Hay Cunningham was read, on the Geology of 

 the Islands of Mull and lona. The author considers the rocks 

 of Mull as referable to four periods of formation, and he de- 

 scribed these in detail, viz. the Primary stratified Rocks ; the 

 Granite ; the Sandstones, Shales, and Limestones of the liassic 

 series ; and the great assemblages of Trap rocks, which consti- 

 tute by much that larger part of that island. A particular ac- 

 count was given of the distribution and the limits of these diffe- 

 rent formations, their external physical aspect, their mineralogi- 

 cal characters, the fossils which some of the rocks contain, and 

 the various relations of the members of the series to one another; 

 and more especially, the relations of the granite to the primary 

 slates, and of the trap to the primary and secondary strata. In 

 describing lona, various interesting particulars were communi- 

 cated regarding the limestone or dolomite connected with the 

 primary rocks of that island, and the felspar rock which occurs 

 near the limestone. The paper was illustrated by an extensive 

 series of coloured sections of the strata and veins, and by speci- 

 mens of the rocks. 



Professor Jameson exhibited a new bird, which appeared to be- 

 long to the genus Eurylaimus, and which he named Dalhousiae, 

 in honour of the Countess of Dalhousie, who has long been dis- 

 linguished as an enthusiastic admirer of nature, and a successful 

 cultivator of natural history. It was described in the following 

 terms : — Bill greenish-black ; on its edges, along the culmea, 

 and at the tip, yellowish-white ; length 3-4ths of an inch ; 

 breadth at base 3-4ths of an inch. Nostrils ovoid, inserted at 

 the base of the bill, and partially covered with feathers. Body 

 grass-green above ; below, apple-green. Throat of a golden 

 yellow, which extends round the neck, and terminates at the 

 occiput with a few sky-blue feathers. Occiput and top of the 

 head, greyish-black, with a crest of sky-blue. Ear-coverts and 

 face golden-yellowj mixed with sky-blue. Wings short ; 1st 

 and 4th quills equal, 2d and 3d the longest ; external webs of 

 quill-fcathers grass-green ; internal bluish-black, with a broad 

 band above in their centre of sky-blue ; below, there is one of 



