128 GEOLOGY. 



Notes on the Iron Ores of Canada and their Development, by Dr. B. 

 J. Harrington (pp. 192-259), contains some additional information to 

 that in the earlier report on the same subject, by Dr. Sterry Hunt ; but 

 the subject has been so completely treated previously, as to leave little 

 room for a second report. Indeed many analyses of Dr. Hunt's have 

 been reprinted to illustrate the subject. The details of the different 

 furnaces at work in Canada and Nova Scotia are of considerable 

 interest. In the introductory summary Mr. Selwyn calls attention to 

 the discovery of a new carbonate containing alumina in combination 

 to the amount of 30 per cent., a fact of great interest ; but the detailed 

 examination is not given. 



The final Beport is palaeontological (see "Whiteaves, post). H. B. 



SiMONiN, L. De Washington a San Francisco, a travers le continent 

 americain. [Erom Washington to San Francisco, across the 

 American Continent.] Le Tour du Monde, vol. xxvii. pp. 161- 

 240. Paris. 



Contains some geological and mining information. 



Stevenson, J. J. Account of the Lignites of Colorado. Proc. Lye. 

 Nat. Hist. N. York, ser. 2, no. 4, pp. 93, 94. 



Abstract. The age of the lignites is said to be Upper Cretaceous. 

 The account is a record of observations made in 1873, with the Expe- 

 dition of Lieutenant Wheeler. 



Tenney, Sanborn. The Quartzite of Williamstown and the Struc- 

 ture of the Graylock Range. Proc. Amer. Assoc, vol. xxii. B. 

 pp. 37-41. 

 Says that there is no reasonable doubt that the slates of the Taconic 

 range dip under the great Limestone belt at its eastern base. " The 

 main mass of the Graylock range appears like one vast monoclinal." 

 The quartzite of Williamstown is said to pass gradually into limestone, 

 although at Stone Hill the latter is found dipping under the former. 

 EuU of local details. G. A. L. 



Yanden Broeck, Ernest. Bapport sur nn memoire de M. G. E. 

 Matthew intitule: Notes on the Mollusca of the Post- Pliocene 

 Formation in Acadia. [Report on a paper by Mr. G. E. Matthew, 

 entitled, &c.] Proc.-verb. Soc. Mai. Belg. t. iii. pp. clv-clxiii. 

 A summary of the Acadian Post- Pliocene deposits is given as fol- 

 lows, in ascending order: — 1. Boulder Clay. Depression of 2500 to 

 1000 feet; fauna meagre, arctic in character. 2. Syrtmsian Beds. 

 Depression of 1000 to 500 feet ; fauna probably very scarce : intense 

 marine currents. 3. Lower Leda Clay. Upper part, depression of 

 500 to 200 feet ; lower part, of 200 to 100 feet : in the older beds some 

 deep-sea forms ; in the upper great development of marine life. — • 

 4. Upper Leda Clay. Depression of 100 to 60 feet : life less abundant 

 than in the lower groups. 5. Sacckava Sand. Depression 60 to 40 

 feet and less : littoral fauna. G. A. L. 



