Page 161 - YB1893_Classical

16~1\r N BEGINNING the recitation today, I think it is quite important that you per· IIi Feeny understand how this old world of OUfS was constructed aud the mountains .J', thrown up. This is /lIe-" "Oh, Professor 1 What is tllat Oil the table? >' ~ "YOIl see before you there the only living re preseutarive of the Silurian Trilobites, [Paradoxides Harlani,1 it is the King Crab [Limulus.] Even this is a disputed question, but if it is true, he is very ancient, gentlemen, very ancient." Every- body eudeavors to laugh the loudest, whereupon several tens are awarded: "Wheu 1 went up the Hudscn-> 1\1r. Lewis, please give me that paper you have ill your hand, you may read it after class. As I was saying, when' I weu t up the Hudson, [- Mr. Galt, have you found your book yet? Galt-"No, sir." "Well, r hardly see how you expect to ill examina uon without it." Jack looks at Leas and says softly: "Neither do I, it." "When T went up the Hudson, r had an excellent oppor-tunity of ex;unillillg the columnar structure of the Palisades. Only the eye of a GRF.A'I' MAN can detect the delicate and almost obliterated structure: of these rocks. It is not probable that any in the class could do so immediately." Class feel complimented. .' But just here do you all have a distinct and definite idea of how this old world of ours was formed. But now I have here ill my hands some peculiar rock formations; can ally one in the class tell me how they differ from those we have just examined?" All look wise especially Queen, but no one offers an explanation. "This, theu, is gneiss; it's a nice specimen of glleiss." "This other is schist. Schist is allied to gneiss ill that it is metamorphic. Schist look at this gneiss rock." Class begin to smile. "There ,8,