session 1902-1903. 
xliii 
The viaduct of the Great Northern Railway at Digswell was 
pointed out as showing to what extent the valley of the Mimram 
had been excavated in comparatively recent times. 
A hearty vote of thanks to the Directors brought an interesting 
excursion to a close. 
228th Ordinary Meeting, 4th November, 1902, at Watford. 
George P. Neele in the Chair. 
Mr. Arthur Cottam, E.R. A.S., “Eldercroft,” Watford; Mr. Henry 
John Bliss, “ Biskra,” Watford ; and Mr. E. Montague Jones, B.A., 
Head Master of the Grammar School, St. Albans, were proposed for 
membership of the Society. 
The following paper was read :— 
“ The Geology of North-West Hertfordshire and the adjacent 
parts of Bedfordshire and Buckinghamshire. Part I: Results of 
a Geological Survey of the Eastern Portion of the District.” By 
T. E. Lones, M.A., LL.D., B.Sc. 
The paper was illustrated by means of maps, sections, and 
diagrams. (Its publication is deferred until Part II is ready.) 
229th Ordinary Meeting, 2nd December, 1902, at St. Albans. 
Lewis Evans, E.S.A., E.R.A.S., President, in the Chair. 
Mr. Arthur Cottam, Mr. H. J. Bliss, and Mr. E. M. Jones were 
elected Members of the Society. 
The following paper was read :— 
“ A Descriptive Catalogue of the Maps of the County of Hert¬ 
ford, Part II.” By Herbert George Eordham. ( Transactions , 
Yol. XI, pp. 173-212.) 
The paper was illustrated by a collection of topographical works 
and county atlases. 
The meeting was held in conjunction with the St. Albans and 
Hertfordshire Architectural and Archaeological Society. 
230th Ordinary Meeting, 16th December, 1902, at Watford. 
John Hopkinson, E.L.S., E.G.S., Assoc. Inst. C. E., in the Chair. 
The following papers were read:— 
1. “ Notes on the Habits of some of our Lepidopterous Insects. 
I.—The Butterflies.” By Arthur Cottam, F.R.A.S. ( Transactions , 
Yol. XI, pp. 222-226.) 
2. “On the Shrinkage of the Upper Sources of the River Lea.” 
By James Saunders, A.L.S. ( Transactions , Yol. XI, pp. 236-238.) 
