AND OTHER WORK IN HKKTS. 109 



besides various other matters, and the original Charter of the New 

 Eivcr Company being reprinted in Appendix D. * 



1893. 



In a paper on disseminated silica in chalk Mr. Jukes-Bkowne 

 gives a chemieal analysis (by Prof. Harrison) of Middle Chalk from 

 Hitchin, showing -35 per cent, of colloid silica, f 



In this year the Geologists' Association seems to have had an 

 excursion into Hertfordshire in which our Society did not take 

 part. It was to Amwell and Chad well Springs, and the account of 

 it refers also to the Ware boring and to other works of the New 

 River Co. + 



Sir J. Evans treated of " Hertfordshire and its Water Supply," 

 drawing attention to the amount ali'eady taken from the Valley of 

 the Lea, and to the Hertfordshire case against the extension of the 

 supply of the New River and East London Companies from wells 

 in that valley. § 



A Report of my own, to the Ware Local Board of Health, on the 

 water-supply of the town, was printed in a local newspaper in June. 



An Address, by Mr. W. A. M. Yalon, contains a notice of the 

 Barnet water-supply and of the Mimms swallow-holes. || 



The most important work of this year, as regards Hertfordshire, 

 is in the form of a Blue Book, detailing the proceedings of "the 

 Royal Commission appointed to inquire into the Water Supply of 

 the Metropolis," which is generally known as the Balfour Com- 

 mission, from its Chairman, Lord Balfour. ^ Unfortunately, such 

 publications are not generally found in public libraries, and the 

 valuable information contained in them is less widely known than 

 it should be. 



The Report deals with "Deep Wells" and vrith "the Chalk as 

 a Water-bearing Formation" at some length. 



Of the Plans, etc., several refer to Herts, and Mr. R. E. 

 Middleton's water-contour Map is wholly concerned with our 

 county. 



The volume of " Evidence " contains much relating to Herts, but 

 it would be a lengthy task to give full references, and I must 

 be content with refening more especially to the evidence given 

 by the following, with pages: — J. Francis (2, 16, 102, 197); 



* 8vo. London, pp. x, IS-i, 151. 

 t ' Geol. Mag.,' dec. iii, vol. x, pp. 543, 4. 

 X "W. Topley. ' Proc. Geol. Assoc.,' vol. xiii, pt. 5, pp. 123-5. 

 § 'Hertfordshire Illustrated Review,' Xo. 1. 

 II ' Traus. Soc. Eng.' 



H Folio. London. Consisting of Report, Maps, Plans and Diagrams, 

 Minutes of Evidence, Appendices to Minutes of Evidence, and General Index. 



