HEKTFOEDSHIRE NATURAL HISTORY SOCIETY. xlvii 



For tlm illustrations which have appeared in the second volume 

 of the ' Transactions ' the Society is indehted almost entirely to the 

 liberality of authors, Dr. Hood luivinp; provided the ])late illustniting 

 his paper on the May-lly ; Mr. -J. Hopkinson the plate of Well- 

 sections in tlie London Basin ; Professor Atttield the woodcuts of 

 mites from medicinal extracts ; and ^[iss Ormerod most of the wood- 

 cuts illustratino- her papers on " Economic Botany" and " Injurious 

 Insects " ; tlie remainder of these, and also the woodcuts illustrating 

 the Rev. Canon Gee's paper on " Famous Trees in Hertfordshire," 

 being reproduced from the ' Gardeners' Chi'onicle ' by the kind 

 permission of the Editor, Dr. Maxsvell T. Masters, F.E.S. 



The following are the principal papers and lectures which have 

 been read or delivered during the year 1880 : — 



Jan. 20, at Watford. — On the Occurrence of Vertigo 3Iotilinsiana, 

 Dupuy, in Ilertfordshire ; by Henry Groves. 



Note on the Pupation of the Stag-beetle ; by Arthur Cottam, 



F.R.A.S. 



Notes on Birds Observed in 1879 ; by John E. Littleboy. 



Feb. 17, at Watford. — Anniversary Address; by the President, J. Gwyn 

 Jeffreys, LL.D., F.R.S , etc. 



24, at Hertford. — Notes on Sponges, Eecent and Fossil ; by Henry 



Gilbertson. 

 March 16, at Watford.— The Post-Tertiary Deposits of Hertfordshire; by 

 J. Vincent Elsden, B.Sc, F.C.S. 



23, at Hertford. — Observations on Rotifers, with special reference to 



those found in the neighbourhood of Hertford ; by F. W. 

 Phillips. 

 April 20, at Watford. — Meteorological Observations taken at Wansford 

 House, Watford, during the year 1880 ; by John Hopkinson, 

 F.L.S,, F.M.S., Hon. Sec. 



Report on the Rainfall in Hertfordshire, in 1880; by Jolin 



Hopkinson. 



Report on Phenological Observations in Hertfordshire in 1880 ; 



by John Hopkinson. 

 Oct. 26, at St. Albans. — A Few Words on Tertiary Man; by John 



Evans, D.C.L., LL.D., F.R.S. , etc. 

 Nov. 16, at Watford.— The Glaciers of Switzerland; by the Rev. George 



Hen.slow, M.A., F.L.S., F.G.S. 



30, at, Hertford.— The Voyage of the "Challenger" ; by H. N. 



Moseley, M.A., F.R.S. 

 Dec. 14, at Watford —Rainfall in Hertfordshire, 1840-49 ; by the Rev. 

 C. W. Harvey, M.A., F.M.S. 



The Flood in the YaUey of the Gade, 3rd August, 1879; by 



John E. Littleboy. 



On the Importance of Recording Erratic Blocks ; by H. George 



Fordham, F.G.S. 



Meetings have also been held on the 27th of April, at Hertford, 

 on the 2nd of November, at Ware, and on the 21st of December, 

 at Bengeo. These were devoted to microscopical study and the 

 exhibition of objects of general interest. A Bye-meeting for the 

 same purpose was held on the 13th of January, at Ware. 



