APPLIED AlfD ECONOMIC. 187 



Anon. Extraordinary Development of the Yorkshire Coal-field, 



Coll. Guard, vol. xxvii. p. 756. 

 Account of new collieries recently opened in Yorkshire. 



. Another Discovery of Coal near Leicester. CoU. Guard. 



vol. xxvii. p. 757. 



Account of a boring at Lindridge, 7 miles "W. of Leicester, began 

 in the New Red Marls and carried to a depth of 300 feet. Two coal- 

 seams have been pierced, 2 feet and 7 feet thick. G. A. L. 



Discovery of a Coal-seam at Gateshead. Coll. Guard, vol. 



xxvii. p. 757. 



Note of the discovery of a 4|-feet coal-seam, at 25 fathoms from the 

 surface, in sinking the Atkinson shaft of Eedheugh Colliery. 



. Discovery of Coal in South Staffordshire. Coll. Guard, vol. 



xxviii. pp. 129, 133. 



Articles on the sinkings at Lye Cross, which, after passing through 

 60 yards of Rowley Rag, have struck all the " measures " of S. Staf- 

 fordshire from the 2-foot and brooch coal to the bottom coal, including 

 the thick coal, hero 29 feet thick. G. A. L. 



. . Iron and Coal in India. Iron, vol. iv. p. 422. 



. The Mineral Wealth of Peru. Iron, vol. iv. p. 423. 



. The Iron Ores of Labrador. Iron, vol. iv. p. 423. 



BiDWELL, C. Coprolites. Trans. Inst. Surveyors, vol. vi. pp. 293- 

 310 ; Discussion, pp. 311-322. 



The paper opens with a discussion on the probable mode of origin of 

 phosphatic nodules, in the course of which frequent references are 

 made to previously published opinions. The remainder of the paper is 

 devoted to a description of the works in Cambridgshire. The produce 

 per acre varies from 150 to 400 tons, at Wicken it is 2000. Details 

 are given as to the mode of working and washing the nodules. Ana- 

 lyses, by Dr. A. Yoelcker, are appended. W. T. 



Bower, John A. Whitby Jet and its Manufacture. Journ. Soc. 

 Arts, vol. xxii. no. 1100, pp. 80-87. 



The author thinks that jet is not simply a lignite, but that it has 

 been formed as a distillate from the containing rock. It was oiigi- 

 nally got for the most part along the cliffs ; but these workings are 

 now nearly abandoned, and tho chief are on the hill-sides in the Cleve- 

 land district. Tho methods of getting tho jet and of working it into 

 ornaments are described. W. W. 



Betgo, John. On such of the Industries of Bradford as relate to 

 its Geological Position. Rep. Brit. Assoc, for 1874, Sections, pp. 

 70, 77 ; published in full under the title " The Industrial Geology 

 of Bradford." 8vo. Leeds. Pp. 18. 



The principal building-stones of the district are, the coarse sandstone 



