Reoiews — Notes on Books. 25 



indeed, the Antiq-uarian and Natural History Society of its own town 

 — and institute field-excursions. In the neighbourhood of Penzance, 

 with such interesting geological and mineralogical localities as 

 Botallack, St. Ives, Gurnard's Head, St. Michael's Mount, the Lizard, 

 and others, there is ample material at hand to last for a long time ; 

 and then the rail — especially now that the broad-guage is open all the 

 way to Penzance — affords easy means of access to many other parts 

 of Cornwall. Such field-excursions stimulate members to fresh 

 exertions, and bring new members by creating an interest in the 

 Science of Geology, for they show that it does not consist merely in 

 learning the hard names of uncouth reptiles and other fossils, but 

 that much interest is to be derived from observing how nature is 

 acting at the present day, and endeavouring to explain by these 

 means how she has acted in ages long gone by. 



It would be imfair, however, to insist too much on the want of 

 interest felt in the Society, when we recollect the really fine museum 

 which is now in course of construction, and will be opened next 

 year. The building does great credit to the Society, and, when com- 

 pleted, will form an additional attraction to the town of Penzance, 

 and the Duchy of Cornwall. 



III.— NOTES ON BOOKS, ETC. 



Herrn K. von Seebach has published a geological sketch of the 

 Island of Bornholm.^ This island consists largely of crystalline 

 schists, overlain by Silurian rocks, with Trilobites and Brachiopods 

 (Acrotreta), the regio ConocorypJiarum et Olenorum, of Angelia ; 

 these palgeozoic rocks are followed unconformably by the Bornholm 

 Coal-formation, which, from the associated plants (Cycads) and 

 shells, is of Jurassic age, and this is overlaia by Cretaceous rocks — 

 Greensand, conglomerate, grey limestone, etc. — with many cha- 

 racteristic Chalk fossils, as Belemnites mucronatiis, Terehratula carnea, 

 Lima Eoperi, Pecten serratus. Brown coal and Amber are found on 

 the South coast. 



An enumeration of fossils, collected in the Limestone at Chicago, 

 Illinois, has been prepared by Professor A. Winchell and Professor 

 0. Maury,^ and which is considered to be of the age of the Niagara 

 limestone of New York. The total number of species noticed 

 from this locality is eighty-two, of these about forty are new and 

 are fully described, and mostly figured, the work being illustrated 

 by the authors in two lithographic plates. The remaining species 

 have been identified with already published figures, but none of the 

 Gasteropoda or Cephalopoda have been identified with New York 

 species. 



The Second Part of the Palseontology of the Jura and Chalk 

 formation of North-western Germany, by Dr. Schloenbach,^ has 



1 Zeitschrift der deutschen geolog. Gessellschaft, 1865, p. 338. 



2 Boston Society of Natural History, Vol. i. p. 81. 



3 Beitrage zur Palaontolgie der Jura-und Kreid-formation, 1866. 



