session 1900-1901. 
xiii 
April 10.—Report on Phenological Phenomena observed in Hertfordshire 
during the Year 1899 ; by Edward Mawley, Sec.R.Met.Soc. 
- The Habitats of the Mycetozoa ; by James Saunders, A.L.S., 
and E. Saunders. 
-Notes on Lepidoptera observed in Western Hertfordshire in 
1897, 1898, and 1899; by Arthur Cottam, F.R.A.S. 
-A Curious Instance of the Labour-saving Instinct in the Leaf¬ 
cutting Bees ; by Aubrey C. Stoyel. 
-- Notes on Birds observed in Hertfordshire during the Year 1899 ; 
by Alan F. Crossman, F.L.S., F.Z.S. 
- Notes on Curious Nesting-places ; communicated by John 
Hopkinson, F.L.S., F.G.S. 
Oct. 23.—Hertfordshire Maps : a Descriptive Catalogue of the Maps of 
the County, 1579 to 1900 (Part 1, 1579-1673); by Herbert 
George Fordham. 
Nov. 20.—The Functions of a Natural History Society considered with 
special reference to the Hertfordshire Natural History 
Society; by T. E. Lones, M.A., LL.D., B.Sc. 
The following lecture was delivered at St. Albans:— 
Oct. 25.—Our National Heritage; by Hugh Blakiston, B.A., Secretary 
of the National Trust for the Preservation of Places of 
Historic Interest or Natural Beauty. 
The following annual reports, not read at any meeting of the 
Society, have been printed in the ‘ Transactions ’:— 
Meteorological Observations taken in Hertfordshire in the Year 1899; by 
John Hopkinson, F.L.S., F.G.S., F.R. Met. Soc., Assoc. Inst. C.E. 
Report on the Rainfall in Hertfordshire in the Year 1899 ; by John 
Hopkinson. 
The following Field Meetings were held during the year :— 
May 5.—Arlesey and Hitchin. June 2.—St. Albans. 
—- 19.—Aldbury. - 16.—Rothamsted, Harpenden. 
- 26.—Kew Gardens. - 30.—Ruislip Reservoir. 
The meeting on May 5th was held in conjunction with the 
Geologists’ Association. 
The Society is indebted to the late Sir John Lawes and to 
Sir Henry Gilbert for permission to visit the Experimental Farm 
at Rothamsted, and to Mr. J. J. Willis for conducting the party on 
the occasion; also to Mr. A. E. Gibbs for hospitality at St. Albans. 
Two parts of the tenth volume of the present series of the 
‘ Transactions ’ have been published during the year, containing 
80 pages and one plate with other illustrations, and it is intended to 
complete the volume and commence another in the present year. 
The usual exchange of Transactions has been made, and several 
State publications, as well as those of the learned societies, have 
been added to the Library. The Society’s hooks are still stored in 
the old Hoard Room of the Watford Urban District Council, hut 
this arrangement must he looked upon as a temporary one, for the 
room is so inaccessible that the Library is now very little used by 
the members. A list of additions made to the Library during the 
year 1900 is appended to this Report. 
The balance-sheet shows that the funds of the Society are in 
a satisfactory condition. There was at the end of the year a balance 
in hand of about £18, and the income has exceeded the expenditure 
VOL. XI.—PART VIII. 
