APPLIED A.ND ECONOMIC. 203 



Saarbriicken.] Zntsch. Berg- Hutt. Saliyienw. Bd. xxiii. part 3, 

 pp. 135-162. Abstract in Proc. Inst. Civ. Eng. vol. xliii. 

 pp. 397-399. 

 Gives the results of 282 coking trials, arranging the coals in their 

 stratigraphical order. The jield of coke and the coking character in- 

 crease with the age of the seams ; the amount of hygroscopic water is 

 less in the older seams. Different kinds of coal occur in each seam ; 

 the author investigated the characters of these, and gives some con- 

 clusions as to the kind of vegetation from which they were severally 

 produced. H. B. 



Sjogren, A. Anteckningar i pratisk geognosi. iii. Om malmlagers 

 t'altstiipning. [Suggestions in Practical Geology, iii. Faulting 

 of Ore-deposits.] Geol. Foren. Stockholm Forhandl. Bd. ii. 

 pp. 438-450 ; plate, 5 figs, in text. 



Smock, J. C. Mining Clay. Trans. Amer. Inst. Min. Eng. vol. iii. 



pp. 211-215. 

 The method of mining clay at Chesquake's Creek, New Jersey, 

 is described, and a geological section given. 



Smyth, Warington W. The Ores of Iron considered in their Geo- 

 logical relations. Coll. Guard, vol. xxix. pp. 737, 738, and Min. 

 Journ. vol, xlv. p. 550. 



Lecture to the Iron and Steel Institute, May 15, 1875. 



Lectures on Mining at the Eoyal School of Mines. Min. 



Journ. vol. xlv. pp. 1247, 1274, 1302, 1330, 1358, 1386, 1414. 



Spon, Ernest. Water Supply. The Present Practice of Sinking 

 and Boring Wells ; with Geological considerations and examples 

 of Wells executed. Pp. vii, 217. Plate; 271 woodcuts (figs. 1-16 

 are geological diagram-sections ; figs. 222-271 are chiefly sections 

 of wells). 8vo. London. 

 Chap. 1, pp. 1-34, Geological considerations ; nature of springs, 

 thickness of strata, rainfall, &c. Chap. 2, pp. 35-39, New Red Sand- 

 stone. Chap. 7, pp. 155-201, Examples of Wells, and of districts 

 supplied by Wells. On pp. 190-201 there is a Table of Wells in 

 abstract. Chap. 8, pp. 202-210, Tables [of Strata, &c.] and miscel- 

 laneous information. W. T. 



Topley, W. Report [to the Corporation] on the Water Supply of 

 Hastings. Pp. 18. Fol. Bastings. 



Describes the existing gravitation works and wells. The possibility 

 of increasing the supply from the wells is discussed, as also proposed 

 schemes for obtaining water from the Chalk and Lower Greensand. 

 Analyses of Water, by C. Ashenden, are appended. W. T. 



Trevelyan, Sir W. C. Peat. Journ. Soc. Arts, vol. xxiii. p. 1013. 

 Advocates the use of peat as a building-material for partition- walls. 



