124 Mr. Murchison on the Geological Structure 



to zoology, both for the sake of rendering the question less complex, 

 and because we conceive that the botanical nomenclature of the 

 present day stands in much less need of distinct enactment than the 

 zoological. The admirable rules laid down by Linnaeus, Smith, 

 Decandolle, and other botanists (to which, no less than to the works 

 of Fabricius, Illiger, Vigors, Swainson, and other zoologists, we 

 have been much indebted in preparing the present document), have 

 always exercised a beneficial influence over their disciples. Hence 

 the language of botany has attained a more perfect and stable con- 

 dition than that of zoology ; and if this attempt at reformation may 

 have the effect of advancing zoological nomenclature beyond its 

 present backward and abnormal state, the wishes of its promoters 

 will be fully attained. 



(Signed) H. E. Strickland. J. S. Henslow. 



June 27, 1842. John Phillips. W. E. Shuckard. 



John Richardson. G. It. Waterhouse. 



Richard Owen. W. Yarrell. 



Leonard Jenyns. C. Darwin. 



W. J. Broderip. J. O. Westwood. 



XVIII. On the Geological Structure of the Ural Mountains. 

 By Roderick Impey Murchison, Esq., F.R.S.,Pres. G.S., 

 M. E. de Verneuil, and Count A. von Keyserling*. 



A SHORT introduction explains, that although the true geological 

 relations of the rocks which constitute these mountains were pre- 

 viously little known, the Russians had become well acquainted with 

 their mineral wealth and lithological structure. The skill and energy 

 with which the mines have been worked having been adverted to, 

 the authors dwell with pleasure upon the facilities which the Impe- 

 rial Government afforded them by the instructions conveyed to 

 all the mining establishments by the orders of Count Cancrine and 

 the arrangements of Gen. Tcheffkine. They also acknowledge the 

 advantages they derived from the co-operation of many officers at 

 the different stations or zavods, several of whom prepared maps for 

 their usef. They further express their obligations to many indi- 

 vidual proprietors, and notably to M. Anatole Demidof, and the 

 Prince Butera, for their very hospitable reception at the zavods of 

 Nijny Tagilsk and Bissersk. They then proceed to state, that without 

 the small general map recently published by Baron A. von Humboldt 

 and his associates, the objects of the journey could not have been 

 so well attained. These objects Were, to reunite the various frag- 



* From the Proceedings of the Geological Society, vol. iii. p. 742 ; being 

 an abstract of a memoir read before the Society on the 18th of May, 1842. 

 On the geology of Russia, see also pres. vol. p. 71, note. 



f Among these officers allusion in this brief notice can only be made to 

 those in command, viz. Gen. Glinka, Commander-in-chief at Ekaterinburg; 

 Col. Volkncr, formerly at Perm ; Col. Protassof at BogosJofsk, who first ex- 

 plored the districts north of that station ; Col. Tchaikofski of Ekaterinburg, 

 and Col. Galahofski of Turinsk. 



