Reports & Proceedings — Zoological Society of London. 41 



From the experience gained it has been possible to make a mixture 

 containing known quantities of nickel and chromium, which with 

 the addition of iron produces a spectrum in the neighbourhood of the 

 chromium group that is practically identical with that produced by 

 the aerolite Auhres. 



II. — Zoological Society of London. 

 November 21, 1916.— Dr. S. P. Harmer, M.A., F.R.S., Vice-President, 



in the Chair. 



"On the development from the matrix of further parts of the 

 skeleton of the Archceopteryx preserved in the Geological Department 

 of the British Museum (Natural History)." 



Dr. B. Petronievics and Dr. A. Smith Woodward, P.P. S., Y.P.Z.S., 

 read a paper on some new parts of the pectoral and pelvic arches 

 lately discovered in the London specimen of Archceopteryx. The 

 coracoid bone most closely resembles that of the ratite birds and 

 the Cretaceous Hesperornis. The pubic bones are twice as long as 

 the ischia and meet distal ly in an extended symphysis, gradually 

 tapering to a point, which seems to have been tipped by a mass of 

 imperfectly ossified cartilage. 



III. — Edinburgh Geological Society. 

 November 15, 1916. — Professor Jehu, Vice-President, in the Chair. 

 The following papers were read : — 



1. "A New Locality for Triassic Reptiles, with Notes on the Trias 

 found in the Parishes of Urquhart and Lhanbryde, Morayshire." By 

 Mr. William Taylor, J. P., Lhanbryde. 



Mr. Taylor recorded the discovery, in sandstones about a mile 

 north of the village of TTrquhart, of a nearly complete specimen of 

 Telerpeton, somewhat smaller than the example described by Huxley 

 in 1866. 



On account of lithological resemblances he correlated the sand- 

 stones, etc., of Bearshead, Stonewells, Meft, Lhanbryde, and New 

 Elgin with the fossiliferous rocks of Lossiemouth and Spynie, and 

 concluded that the Trias of Morayshire was much more extensive than 

 formerly supposed. 



The paper was illustrated by a map showing the distribution of the 

 Triassic rocks in the area extending from Lossiemouth and Bearshead 

 southwards to New Elgin and Lhanbryde. On the map were recorded 

 the genera of reptiles found at the various fossiliferous localities. 



2. " Volcanic Necks in North- West Ayrshire " (with lantern 

 illustrations). By G. V. Wilson, B.Sc, H.M. Geological Survey. 



The area between Dairy, Ardrossan, and Largs contains the sites 

 of about thirty volcanoes. In the north the large volcanic centre of 

 Misty Law is most probably of Calciferous Sandstone age, and gave 

 rise to the lava-flows of that period in the district. The area to the 

 south is studded with a number of volcanic necks, all of which contain 

 ash of a type similar to the interbedded ashes which occur about the 

 position of the Dairy Blackband Ironstone ; it was suggested that 

 some of the necks gave rise to these beds of ash. One neck was 



