74 Scientific Intelligence. 



10. Nepheline Rocks in Brazil. — A paper by Orville A. 

 Derby, on the Nepheline Rocks of Brazil is contained in the 

 Quarterly Journal of the Geological Society for May, 1891 (vol. 

 xlvii), in continuation of a paper on the same subject in the same 

 Journal for 1887 (vol. xliii). 



11. Panama Geology. — A note by M. Douville (Bull. Soc. 

 Geol. de France, April, 1891) states that he has studied speci- 

 mens received by him from the beds cut by the Panama canal, 

 and has found that to the north, near Colon, the Miocene out- 

 crops and is very fossiliferous ; that beyond, occur beds charac- 

 terized by an abundance of Orbitoides and the presence of 

 Nnmmulites, indicating the presence of the Oligocene. Along 

 the southern part of the canal, to the Pacific, there occur lignitic 

 beds of the Eocene. All the beds are horizontal or but little 

 inclined. 



12. Geological Map of Scotland by Sir Archibald Geikie 

 (John Bartholomew & Co., Edinburgh). — This finely colored 

 geological map, 30X26 inches in size, is an interesting study for 

 the geologist from many points of view. One of the most in- 

 structive parts is the multitude of dikes of igneous rocks, which 

 cut through the rocks in various directions, part following the 

 great valleys in nearly parallel interrupted lines, and others cross- 

 ing the country irrespective of topographical features. All the 

 great formations are represented excepting the Tertiary. The 

 map is accompanied by 23 pages of text giving a brief review 

 of the geology of Scotland. 



13. Quaternary Carnivores found on the island of Malta. — 

 Until recently the known extinct Quaternary Mammals of Malta 

 have included only Herbivores. "Nature" of November 17 

 announces (from the "Mediterranean Naturalist" of Malta) that 

 Mr. J. H. Cooke, in excavating last spring the Har Dalam 

 cavern, found, along with hundreds of bones of Hippopotamus 

 Pentlandi, Elephas mandraensis, Cervus barbaricus and of many 

 other species, discovered an entire ramus of the lower jaw of a 

 bear, Ursus arctos, and teeth also of a species of wolf. 



14. Excavation by Glaciers. — Prof . Baltzer, of Berne, has made 

 preparations for investigating the "Erosive action of Glaciers" 

 in the valley of the Grindelwald glacier. He states that accord- 

 ing to his examinations the work of excavation is partly simple 

 abrasion, and partly splintering or crushing, especially in the 

 region where limestone is the exposed rock. He has bored 15 

 holes 1 to 2 meters deep in the limestone at the smoother and 

 otherwise most favorable spots. The glacier of the Grindelwald 

 is now commencing its new advance and therefore offers special 

 facilities. Moreover, owing to the variations of the seasons, he 

 hopes to obtain conclusions in the course of two or three years. — 

 Arch. Sci. Phys. et Nat. Geneva, Nov. 15, 1892. 



15. Chamberlin on the Glacial period. — Prof. Chamberlin's 

 reply to the paper by Prof. G. F. Wright on the Unity of the 



