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276 Scientific Intelligence. 



article in this volume, p. *72, it is unnecessary here to recur to it again. 

 The changes which age makes in the septa of species of Baculites is well 

 exhibited. In the young the septa were found to be extremely simple, 

 small undulations existing in place of the deep lobes and plications. 



The same is true of species of Scaphites and Ammonites, and a corres- 

 ponding difference is apparent between the interior (or primal) and outer 

 whorls of the shells. The paper observes that the fact, though not new 

 with reference to the Ammonites, is for the first time announced with re- 

 spect to the other two genera. 



of Indiana 



yf new species of Fossils from the Carhonif 



vol. iv, pp. 1 to 3Y.) — This paper by Professor Hall contains descriptions 

 of a large number of Carboniferous fossils, mostly molluscan. It includes 

 of Pentremites, 2 species ; Terebratula, 3 ; Spirifera, 2 ; Spirigera, 1 ; 

 Eetzia, 1 ; Rhynconella, 6 ; Orthis, 2 ; Productus, 2 ; Conocardinm, 6 ; 

 Nucula, 2; Cypricardella (n. gen.), 4; Cypricardia, 2; Euoraphalus, 4;' 

 Pleurotomaria, 12 ; Murchisonia, 5 ; Loxonema, 2 ; Bulimella (n. gen.), 3 ; 

 Holopea, 1; Natica, 2; Capulus^l; Bellerophon, 2 ; Conularia, 1; Nau- 

 tilus,!; Orthoceras, 1 ; Cythere (Crustacean), 1 ; Spirorbis, 2 ; Eotalia, 1. 

 These species are from the subcarboniferous limestone, and many of them 

 from Spergen Hill and Bloomington, Indiana. The particular stratum is 

 called the Second Archimedes or Warsaw limestone, lying above the Keo- 

 kuk or lower Archimedes limestone. Professor Hall describes also one 

 Terebratula from the coal measures, {T. millepunctata) which occurs at 

 Topeka in Kansas, and also at Pecos \allage on the line of the Pacific 

 Railroad surveyed by Lieut. "Whipple. 



11. On the Cretaceous Fossils of Vancouver's Island^ Western Americaj 

 by F. B. Meek, (Trans. Albany Institute, vol. iv, p. 37.) — The fossils de^- 

 scribed by Mr. Meek were placed in his hands by I)r. J. S. Kewberryt 

 Geologist of Lieut. Wiihamson^s North California and Oregon Exploring 

 Expedition. The fossils noticed or described are Cardium scitulumy 



Nucula TrasTcana^ Dentallum Nan 

 lonites iScsitMie^ ]) ramosus. A,N€\ 



Lgments 



probably related age, Fholadomya {Goniomya) borealis, P. suhdongata^ 

 Thracia? occidentalism and subtruncafa, Area [Cucullcea) eguilateralls, 

 and Trigmia Evansana. The evidence is not positive that the fossils may 

 not be older than the Cretaceous, though probably of that formation. ^ 



12. Notes explanatory of a Map and Section illustrating the Geological 

 Structure of the country bordering on the Missouri River^from the mouth 

 of the Platte River to Fort Benton ; by Dr. F. V. HA-n)EN, (Proc. Acad- 

 Nat. Sci. Philadelphia, May, 1815.)— The mouth of the Platte is about 

 m lat. 41^ and long. 96^, and Fort Benton at lat. 47|^^ and long. 110^^ 

 so that Fort Benton is far north and west of the starting point, owing to 

 the great curve of the Missouri to the west along lat. 47 and 48"*. The 

 map is derived from the most reliable records in the War Department, as 

 is also the profile section for so many hundred miles. Attractive as have 

 been the fossil developments in this territory, the country has been a terra 

 incognita except to explorers. Now, however, we can begin to trace out 

 the positions of the geological formations. We find the Carboniferous 

 series in the northeast part of Kansas and southeast of Nebraska, passin 

 under the Cretaceous on the west and also on the north near the mout 



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