MR. T. n. HOLLAND OX ROCK-SPECIMICNS FROM KOREA. 171 



l-i. Notes 07i Hock-Specimens collected by W. Gowland, Esq., 

 A.E.S.M., F.I.C., F.C.S., in Korea*. By Thos. H. Holland, 

 Esq., F.G.S., A.N.S.S., of the Geological Survey of India, late 

 Berkeley Fellow of the Owens College. (Head November 12, 

 1890.) 



(Communicated by Prof. John W. Judd, F.R.S.) 



Contents. 



I. Literature. 

 II. Introduction. 

 III. Igneous Rocks. 



(1) Acid. 



(2) Intermediate. 



(3) Basic. 



IV. Metamorpbic Rocks. 

 V. Sedimentary Rocks. 

 VI. Summary. 

 VII. Appendix. 



I. Literature. 



1704. A Collection of Voyages and Travels. London. Vol. iv, 

 pp. 623-632. 



1818. Account of a Voyage of Discovery to the West Coast of 

 Corea and the Great Loo-Choo Island. Captain Basil Hall, 

 London. Pp. 1-57. Appendix, p. cxxi et seq. 



1819. Voyage of H.M.S. 'Alceste.' John McLeod, M.D. Third 



Edition. London. 

 1834. Journal of Three Voyages along the Coast of China. Eev. 



Charles Gutzlaff. Third Edition. London. Pp. 227-249. 

 1873-74. China-Sea Directory. 

 1881. " Notes on the Geology of the Corean Archipelago," Nature,. 



vol. xxiii. p. 417. 

 1886. " Geologische Skizze von Korea." Dr. C. Gottsche. Sitzungs- 



berichte k. Akad. Wissensch. Berlin, vol. xxxvi. p. 857. 

 1886. " Beitrage zur Petrographie von Korea." Prof. J. Koth.. 



Ibid. p. 875. 



n. Introditction^ f. 



Although his visit in 1884 was primarily intended for purposes- 

 of archaeological research, Mr. Gowland has succeeded, under 

 considerable difficulties from the ill-concealed hostility of the natives, 



* Mr. Gowland has kindly supplied me with the speUing of the names as 

 adopted in the system of transhteration employed by Satow, Aston, and 

 Chamberlain. 



t In studying Mr. Gowland's collection of rock-specimens I have been 

 greatly assisted by the maps and information he has so readily supplied. I 

 would like to take this opportunity also of acknowledging my great indebted- 

 ness to Professor J. W. Judd, F.R.S. , for facilities of study and kindly direction 

 in the Geological-Research Laboratory of the jN'orinal School (now Royal 

 College) of Science, and to Professor W. Boyd Dawkins, F.R.S., for kindly 

 placing at my disposal the use of the Geological Laboratories of the Owens- 

 College. 



