300 REroRT— 1891. 



the list of types an enumeration of the principal specimens which have 

 been described and figured. 



Owing to the influence to some extent of members of the Committee, 

 it is gratifying to be able io state that several of the larger museums 

 have decided to publish separate lists of the type and figured specimens 

 in their respective collections. Those of Bristol (by Mr. Edward Wilson) 

 and York (by Mr. H. M. Platnauer) are already published ; while those 

 of Bath (by Rev. H. H. Winwood and Mr. E. Wilson) and Cambridge 

 (by Mr. H. Woods) are nearly ready for issue. Separate lists are also 

 promised for the Museums of Edinburgh, Newcastle-on-Tyne, and 

 Brighton ; and it is hoped that a catalogue of type specimens of fossil 

 Invertebrata in the British Museum will shortly be prepared. So far as 

 the British fossil Vertebrata are concerned, Messrs. Woodward and 

 Sherborn's catalogue (London, 1890) contains a nearly complete enumera- 

 tion of the types. 



Seventeenth Report of the Committee, cons Istinrj o/Drs. E. Hull and 

 H. W. Ceosskey, Sir Douglas Galton, Professor Gr. A. Lebour, 

 and Messrs. James GtLaisher, E. B. Marten, G-. H. Morton, 

 J. Parker, W. Pengelly, James Plant, J. Prestwich, I. 

 Egberts, C. Fox-Strangeways, T. S. Stooke, Gr. J. Symons, W. 

 TopLEY, Tylden-Wright, E. Wethered, W. Whitaker, and C. 

 E. De Eance (Secretary), appointed for the purpose of inves- 

 tigating the Circulation of Underground Waters in the Perme- 

 able Formations of England and Wales, and the Quantity and 

 Character of the Water supplied to various Towns and Dis- 

 tricts from these Formations. (Draivn up by C. E. De Eance, 

 Reporter.) 



Eighteen years have elapsed since your Committee were appointed 

 with their present Chairman and Secretary in their respective positions ; 

 since then your Committee have not only recorded the wells and borings 

 already in existence, but they have annually given much information to 

 engineers and contractors, which they believe have materially aided 

 towns and districts being supplied with pure water. The value and 

 importance of underground water, both from its purity and the absence 

 of expensive law costs and compensation to ri])arian owners, are daily 

 more and more realised, and with the utilisation of these stores comes 

 the necessity of recording their character, quality, and local conditions. 

 Tour Committee, therefore, seek re-election. 



Tour Committee would again call the attention of the Delegates of 

 the Correspondiog Societies to the importance of local observers giving 

 special attention to the date at which the springs of their neigh- 

 bourhood diminish in yield and subsequently increase ; the date at which 

 any springs cease to flow, and that on which they recommence ; the 

 amount of flow of any springs either daily, weekly, or monthly ; similar 

 records of the heights of the water in wells and borings, whether for long 

 or short periods. The value of such observations would be much en- 

 hanced if descriptions be given that will enable the locality to be identi- 

 fied on the one-inch map of the Ordnance Survey and the levels in regard 

 to the Ordnance Datum line. 



