CONTENTS. 



Pages 

 Proceedings of the Geological Society. Session 1916-17, including the 

 Proceedings at the Annual General Meeting, the President's Anniversary 

 Address, etc i-cii 



PAPERS READ. 



Page 



1. Dr. A. Smith Woodward on a Second Skull from the Piltdown Gravel. 



(Plate 1) . 'With an Appendix by Prof. G. Elliot Smith 1 



2. Mr. H. C. Sargent on Lower Carboniferous Spilites from Derbyshire 11 



3. Prof. H. H. Swinnerton & Mr. A. E. Trueman on the Morphology and 



Development of the Ammonite Septum (Plates II-IV) 26 



[The Editor of the Quarterly Journal is directed to ma.s:e it known to the Public 

 that the Authors alone are responsible for the facts and opinions 

 contained in their respective Papers.] 



*^* The Council request that all communications intended for publication by the 

 Society shall be clearly and legibly written on one side of the paper only, with 

 proper references, and in all respects in fit condition for being 

 at once placed in the Printer's hands. Unless this is done, it will be in 

 the discretion of the Officers to retiim the communication to the Author for revision. 



The Library at the Apartments of the Society is open every Week Day from Ten 

 o'clock until Five, except on Saturdays (when the hours are from 10 to 1), and 

 except during the fortnight commencing on the first Monday in September, 

 when the Library is closed for the purpose of cleaning. 



