240 THE ESSEX FIELD CLUB. to stain the specimen as now seen. Mr. E. T. Newton thought there was very great difficulty in distinguishing between elephant and mammoth ivory ; and remarked that the reduction in girth in one direction, which gave a somewhat elliptical contour to the specimen, might be due to rolling amidst the gravel ; but Mr. T. Reader thought there was no possi- bility of rolling in the particular bed from which the specimen came. Mr. Hazzledine Warren reminded the meeting that various sizes of billiard balls were made, and that shrinkage in billiard balls was frequent, rendering them untrue in play ; the shape of the specimen exhibited was, he thought, entirely due to shrinkage. Mr. Cole doubted the specimen being a billiard ball, and suggested that earlier games of ball, such as "cup-and-ball," were played. The President thought that the scratched surface was evidence of wear. Mr. Christy agreed that the reduction in girth was probably due to shrinkage rather than to rolling ; and, on the President's motion, the thanks of the Meeting were tendered to Messrs. Maynard and Christy for the exhibit and account of same. Mr. W. Whitaker, B.A., F.R.S., then gave a verbal report of the Meeting of the Corresponding Societies at the British Association's Meeting at Sheffield, during the past summer; which report led to a general discussion, in which the President, Messrs. Cole, Avery, Wilson, Warren, Nicholson, Newton, and Dalton joined, and Mr. Whitaker replied on various points raised. On Mr. Whitaker's motion, seconded by Mr. Wilson, it was decided that the question of proposed reduction in price of the Geological Survey Maps should be remitted to the Council of the Club for consideration and action. In the absence of the author, the Acting Secretary then read, partly in abstract, Mr. Alfred Bell's paper on "The Zonal Stratification of the English Pliocene Deposits." In the ensuing discussion, Mr. Whitaker expressed his very great appre- ciation of Mr. Bell as a most careful and accurate observer ; he considered, however, that the division of the Pliocene into zones was unnecessary, as there was no evidence of any great length of time during its deposition ; he doubted whether the differences of faunal contents in the various beds were not due to change of conditions rather than to lapse of time, and referred to the intermingling of shells from older zones. In his opinion, the Pliocene in East Anglia need only be divided into Lower (or Coralline) Crag and Upper (Norwich and Red) Crag. Mr. Newton endorsed the warm appreciation of Mr. Bell, and remarked upon the intimate knowledge of Crag species possessed by the author ; he thought it important that the paper should be published. Mr. Warren considered that we should have more information on the supposed worked flints before accepting them as such. Mr. Whitaker would express no opinion on the flints them- selves ; while hesitating to accept them as "worked" until further expert evidence had been brought forward, he had no doubt as to the bed in which they were found, which was the base of the Red Crag. He was present with Mr. Bell when some of the flints were obtained. The President proposed a very warm vote of thanks to Mr Bell for his valuable communication, and for the gift of the fossils which accompanied it.