Zirkel.] 112 [November 1, 



of rhyolites were sustained to an almost unexpected degree, the 

 geological survey having labelled, without my knowledge, the 

 corresponding specimens with the same names in accordance with 

 their geological occurrence. The real method of work, therefore, 

 was exactly the contrary of the method as detailed by Mr. 

 Wadsworth and of which he complains in my preliminary inves- 

 tigation. I had not the slightest clue to the field relations or to 

 Mr. King's conclusions (b. 250), and I wish to respectfully refute 

 the charge which Dr. Wadsworth has been pleased to prefer 

 against me, that I could not properly determine the species a rock 

 belonged to without being informed as to its field character 

 (b. 271). 



My purpose in making these remarks is simply to show that 

 Mr. Wadsworth is quite wrong in believing that my petrographi- 

 cal determinations and descriptions were influenced by Mr. King's 

 classifications and determinations. I did "return from the visit to 

 Mr. King a professed believer in his classification" (b. 249) only in 

 the sense that I had observed that my distinguished friend's 

 nomenclature agreed with that which I had learned and taught in 

 Germany. This nomenclature, commonly accepted by scientific 

 people, now suffers the misfortune of being spurned by Mr. 

 Wadsworth. 



5. Mr. Wadsworth gives evidence of being further misinformed 

 in saying that the hand-specimens corresponding to the described 

 sections were taken to Europe (b. 250, 272), and Dr. Merrill is 

 quite right when he states that the slides were studied apart from 

 the hand-specimens. Merely the fragments, chipped off from the 

 hand-specimens, necessary for the preparation of the sections were 

 sent to Leipzig. Mr. Wadsworth quotes in support of his errone- 

 ous statement Kenard's free French translation of my paper, 

 " Ueber die krystallinischen Gesteine langs des 40 Breitegrades 

 in N". W. America." If he were to take the trouble of glancing 

 at the original German, 1 he would perceive that no mention is 

 made of the transportation of "hand specimens" to Europe. 



None of these have ever been sent twice across the Atlantic 

 as Mr. Wadsworth is informed (by whom?), and as he prefers to 

 believe in opposition to the correct statement of Mr. Merrill. 



1 Sitzungsb. d. k. s. Gesellsch. d. Wiss. z. Leipzig, 1877, 156. 



