THE 



QUARTERLY JOURNAL 



OF 



THE GEOLOGICAL SOCIETY OF LONDON. 



Vol. XXXIX. 



1. The Hornblendic and other Schists of the Lizard District, 

 with some additional Notes on the Serpentine. By T. G. 

 Bonney, M.A., F.R.S., Sec. G.S., Professor of Geology in Uni- 

 versity College, London, and Fellow of St. John's College, Cam- 

 bridge. (Bead November 1, 1882.) 



[Plate L] 



Contents. 

 I. Preliminary. 

 II. Stratigraphy of the Metamorphic Sedimentary Series and its Relation 

 to other rocks. 



III. Microscopic structure of the Metamorphic Series. 



A. Micaceous group. 



B. Hornblendic group. 



C. Granulitic group. 



D. Remarks on the structure of these groups. 



IV. Age of the Metamorphic Series. 

 V. Further notes on the Serpentine. 



I. Preliminary. 



In my paper on the serpentine and associated rocks of the Lizard 

 district*, I made a few remarks only on the hornblendic and other 

 schists, as the investigation of that series was foreign to the purpose 

 then in hand, and in the concluding paragraphs I incidentally men- 

 tioned it as being " probably about Lower Devonian age." Soon 

 after the publication of that paper I began to pay special attention 



* Quart. Journ. Geol. Soc. vol. xxxiii. p. 884. 

 Q.J.G.S. No. 153. b 



