cxlvi Proceedings. 



being present. Most of this number drove from Croydon to Caterham 

 where the remainder joined them. The walk then commenced by 

 passing over the outcrop of the chalk, just visible at a rise of the road 

 outside Caterham, to the firestone pits of the upper green sand for- 

 mation. These pits were explored by the kind permission of Mr. 

 Brotherton, and under the direction of his manager. The workings, 

 which penetrate the base of a hill till they reach a point 300 ft. below 

 the summit, are very tortuous and intricate, and have been worked for 

 a very long period. The firestone, when cut from its natural bed, is 

 workable by the curious primitive tools still in use, but upon exposure 

 to heat or air it rapidly hardens, thus fitting it for furnace floors and 

 other similar purposes. This subterranean ramble was much enjoyed, 

 and the workings were shown up by magnesium light by one of the 

 party. Several good photographs of geological interest were also 

 taken. After traversing the intervening strata, no good sections of 

 which were uncovered or exposed, the party visited the silver sand pits 

 in the lower green sand formation near Godstone. Bej'ond weathering 

 action and the veining of the sand rock, there was not much of special 

 interest, but some further photographs were obtained. 



Tilbmrstow Hill was next visited, where a large pit of a ferruginous 

 sandstone occurs ; this and some large masses of chert from the 

 immediate neighbourhood were carefrilly examined : and a survey of 

 the surrounding country was obtained from the highest point of the 

 hill, the chalk and green sand escarpments, and the large expanse of 

 the formerly forest-clad Weald being well made out. After a beautiful 

 walk to Oxted, the party returned to Croydon. 



Some additions have been made to the series of photographs illus- 

 trating geological phenomena, which is being formed by the Club, and 

 it is hoped that these will be constantly added to, in order that we may 

 in time possess a large collection of such photographs, which cannot 

 fail to be of interest and use to those who may be studying the physical 

 aspect of geology. In the future when we obtain larger premises such 

 a collection would form a suitable adornment for the walls of our Club- 

 rooms. This Sub-Committee is always desirous of giving any 

 assistance or information in its power to members who may wish to 

 become better acquainted with the geology of the district. — Ed. Lovett, 

 Hon. Sec. 



Eeport of the Meteorological Sub-Committee, January, 1890. 



The Meteorological Sub-Committee has continued its work under 

 the supervision of its Honorary Secretary, Mr. Bayard. The daily 

 rainfall of 48 stations in the Club district has been tabulated every 

 month, examined and corrected, and the results printed and issued to 

 the observers and all members of the Club interested in the question, 

 either before, or within a very few days after, the end of the month 

 succeeding that to which the statistics refer. 



The Sub-Committee also desire to mention that Mr. Bayard has 

 taken weekly temperature observations in the Eiver Wandle, in Surrey. 

 They were taken between 3 and 8.80 p.m. on Sunday afternoons, and 

 extended from October, 1888 to February, 1890. This record was pre- 

 sented by the Club's delegate, Mr. Cushing, to Dr. MiU, the Honorary 

 Secretary of " The Committee on Temperature variation in Lakes, 

 Bivers, and Estuaries," at the Leeds Meeting, 1890, of the British 



