Brief Notices. 425 



regards detail, and being the result of wide experience, both in 

 laboratory and field, should be of great value in the hands of students, 

 teachers, and practical workers. 



IX. — Brief Notices. 



1. Canadian Rockies. — The National Geographic Magazine for June, 

 1911, is full of geological interest concerning the Canadian Rockies. 

 Mr. C. D. Walcott gives a short sketch of the geology, refers to the 

 Crustacean fauna of the Cambrian, figuring that remarkable Eurypterid 

 Sidneyia inexpectans, and illustrating his notes with a beautiful series 

 of photographs of Mounts Schaffer, Robson, Wapta, Huber, and 

 President. Besides these we have a " Panoramic view from the west 

 side of Burgess Pass, 3,280 feet above Field, British Columbia", which 

 includes all the great peaks. This forms a folding plate 8 ft. 6 in. 

 long, and is a fine effort of photography, reproduction, and printing 

 by the Matthews-Northrup Works of Buffalo. It was taken by. 

 a Cirkut camera with a revolving bed, by a Bausch and Lomb Zeiss 

 Protar, series vii, with an exposure of one-tenth of a second over each 

 part of the film, and is well worth the attention of any photographer. 



Other interesting matter in this number are papers on the glaciers 

 of Alaska and Mount McKinley. We do not know any finer 

 publication for scenery than this magazine, which is the official 

 organ of the National Geographic Society of Washington, D.C. 



2. Albania. — Of similar nature, though more scientific in character, 

 is Franz Baron Nopcsa's paper on the stratigraphy and tectonics of 

 the Scutari area in North Albania. The author deals mainly with 

 the geology, which ranges from Palseocene to Trias, but illustrates 

 his remarks on the tectonics with a series of fine photographic 

 reproductions and a clear map. The paper appeared in the Jahrbuch 

 der k.k. Oeol. Reich sanstalt, Vienna, vol. lxi, 1911. 



3. Tertiary of Japan. — Dr. Matajiro, Yokohama, has described the 

 Tertiary fauna and flora brought up in borings 240-842 feet from 

 Manoa in the Miike Coal-field. The forms belong to the Palseocene 

 or Eocene of Europe, and include well-known forms like Pholadomya 

 margaritacea(Sow.), Aturia ziczac (Sow.), and Lamna (cf.) cuspidata, Ag. 

 There are also a crab, a Cycad, and a Pentacrinid. The paper, with 

 three plates, appeared in Journal Coll. Sci. Tokyo, February, 1911. 



4. Minerals in Dust. — Dr. W. N. Hartley (Proc. Roy. Soc, ser. A, 

 vol. lxxxv, June, 1911) has "during the past twelve months" had 

 occasion to ascertain the nature of the mineral constituents of an 

 ordinary turbid atmosphere in Dublin. By means of a small portable 

 quartz spectrograph several series of spark spectra were photographed 

 with graduated exposures of 1, 5, 10, 20, 40, and 60 seconds, all on 

 the same plate. The electrodes in the first series were cadmium, iron, 

 nickel, and copper, a self-induction coil being interposed to eliminate 

 the air spectrum and the short metallic lines. Thirteen minerals were 

 recognized, and "as no atmosphere is free from dust, and that of 

 cities is particularly dusty, these mineral constituents must be 

 regarded as possible reagents in cases where there is evidence that 

 very minute quantities of basic substances can initiate chemical 



