ANNIVERSARY ADDRESS OF THE PRESIDENT. CxliH 



elements necessary to constitute a distinct formation, and recognized 

 the Magnesian Limestone of England, the Zechstein of the Continent, 

 and several detritic members as belonging to the new formation he 

 then established under the name Permian. The general correla- 

 tion of the strata of both the Triassic -and Permian formations of 

 the Thiiringerwald and Hartz had been before pointed out by Sedg- 

 wick, Murchison,"Ki n g, and Morris ; audit is the object of Mr. Edward 

 Hull, in his paper on the Odeuwald, to inquire how far a similar 

 parallelism could be traced between the Triassic strata of Germany 

 and of England. In the Odenwald, the Permian strata are very 

 limited, and are identified with the formations of the Thiiringerwald 

 and Hartz, or with the trappoid breccias of "Worcestershire, almost 

 entirely by lithological characters; but as the Zechstein appears, 

 though sparingly, at Heidelberg, the fact of the existence of Permian 

 deposits may be safely admitted. Mr. Hull had in 1854 pointed out 

 three well-defined subformatious in the Buuter sandstone of England ; 

 and it was his principal aim to ascertain whether this member of the 

 Trias is similarly subdivided in Germany, — a species of minute corre- 

 lation attended with much difficulty. The sandstone of the Oden- 

 wald has been sometimes classed with the Permian ; but after a care- 

 ful examination, and depending on mineral resemblances, Mr. Hull 

 considers it Triassic, and the representative of the middle one of his 

 three divisions of the English Bunter, viz. the conglomerate -beds of 

 the West of England, — the two other divisions, or the upper and 

 lower variegated sandstones, being here wanting. But though this 

 sandstone exhibits only one form of physical deposit, it attains a thick- 

 ness equal to that of all the three English subdivisions, and may 

 therefore be their full equivalent. The Muschelkalk, being absent 

 in England, does not admit of a comparison ; but Mr. Hull concludes, 

 as the general result of his examination, that the three divisions of 

 the Permian as established by Murchison, and the four divisions 

 which, as regards mineral characteristics, have been noticed in the 

 Keuper, have all their representatives both in England and in Ger- 

 many. A tabular view is given of this correlation of the deposits • 

 and as Mr. Hull regrets that he was unable to extend the range of 

 his inquiries to the Yosges, we may hope with him that he will at 

 a future day be in a position to obtain more complete data for this 

 class of deduction. 



Professor Mcol has brought under our notice some phasnomena 

 connected with the New Red Sandstone of Loch Greinord, in Ross- 

 shire. Preceding authors had noticed the occurrence on the shores 

 of this loch, of two small patches of red sandstone, and suggested their 

 apparent relation to the Eed Marl, or New Red, of England. Pro- 

 fessor Mcol, after making due mention of the labours of Macculloch, 

 Sedgwick, and Murchison, points out the manner in which the newer 

 sandstone overlies the older formation, the stratification being at a 

 low angle. The underlying sandstone, notwithstanding some pecu- 

 liarities, Professor Mcol identifies with the quartzite of the neigh- 

 bouring mountains, and he finds the newer sandstone deposited, in a 

 very remarkable manner, among the broken edges of the older strata. 



