[Quart. Journ. Geo!. Soc. vol. xix., to face page 44.] 

 \ie.% pp. 37 & 38. 



1. W* 



LAND. 



is, Quart. Journ. 

 FromMenaiStraitip. 360. Sir R. I. 

 to the North of Sno 



tart. Journ. Geol. 



W. Coast, Quart. 

 Prof. Ramsay, Hopk xvi. p. 219. 

 Survey of Great Bri Ross-shire, Quart, 

 ol. xvii. p. 175. 



ghlands. 



f^te ":::::: ::::::::y^\ 2000-2500 



Grit J feet 



Slate *'.'.'.V.*.'.'.'.'.'.'.'.'.'.'.' a1 ' 6"*' with red 



Slate and grit 



Grit and conglomer. — 



Conglomerate and gVrath. 



•red, hard, 

 bjacent gneiss. 

 d. 



Coast ; also Isle of 

 Ross-shire. 

 pebbles of the rock 



il. 



5. Ireland. 



Wicldow, Wexford, and Dublin 

 Counties. 



Messrs. J. B. Jukes & Wyley, Journ. 

 Geol. Soc. Dublin, vol. vi. p. 28. 



Chiefly green and purple grits, shading 

 off into quartz-rocks. 



Grits, bright red, green, grey, coarsely 

 granular, hard. 



Sandstones, compact, close - grained, 

 white mica-fiakes occasionally. 



Slates, green, red, olive-brown, yellow- 

 ish, often chloride, or a fine roofing- 

 slate or flagstone. 



(Stratification very confused.) 



These rocks are identical with those of 

 Barmouth, "Wales. 



6. Fra: America. 



10. Australia (?). 



Cotentin? (Normj 

 Dalimier, Bull. So< 

 vol. xviii. p. 664. Saba. B. F. Shu- 



Granville, Cancaleji Yr n s vol xviii 

 Bull. Soc. Geol. Fr. £ ' 



Ardennes, Slate-f.' Hayden, Trans, 

 mogne. Rozet et Du,. vo l. x ii. p. 23, &c. 

 mont et Dufrenoy, E 

 Geol. de France. 



Cotentin ? (Norr,. aSt 

 Sandstone, compact, 

 Sandstones, purple. se granitic, 150 ft. 

 Con^omerate, felsf noun t e d bv fossili- 

 Limestones, thin. Sandstone.) 

 Clay-slates at St. Zo. 

 Schists, micaceous ar. 



Schists, macliferous. 



iska. 



brian. 

 rests extensively 



Granville, CcB. Yi 



bly on Azoic (Hu- 



Schists, macliferous, 

 and conglomerates 



Ardennes (E 



Quartzite, thick-bedd 

 Psammite, alternatin 

 Schists, pale. 

 Schists, shining ; thi 

 Schists, argillaceous 



Victoria, on Rivers Loddon and 

 Campaspe ? 



A. Selwyn, Quart. Journ. Geol. Soc. 

 vol. x. p. 299. 



Sandstones, ferruginous, micaceous. 



Grits, felspathic, red, grey, brown. 



Slates, clay, arenaceous, felspathic, 



Flagstones, fine arenaceous. 



Quartz -rock 1 •,, ,- 

 ^ , y alternating. 



Conglomerate J to 



Direction N. and S., dip high. 



Gold in quartz -veins. 



Jso organic remains. 



Thickness 35,000 feet. 



(N.B. Probably Lower Silurian.) 



