Proceedings of the Linnean Society of London - University Library

LINXEAX SOCIETY OF LOXDON. 7
Wetherby, Yorkshire. From the time of John Evelyn this oak
has been described, measured, and its age guessed at. Mr. Clayton,
in a printed summary of 22 pages, gives an account of the various
observers who have mentioned the oak in question, and many of
the photographs are designed for comparison with other remarkable
trees, amongst them the Crowhurst Yew in Sussex, the great
Chestnut at Tortworth, and the Greendale Oak in Welbeck Park.
In 1S93 careful measurements and photographs were made of the
tree, on four different visits in January, April, June, and October.
The author's deduction from these data is, that the age of the
tree has been greatly over-estimated ; his own belief being that
oOO years is the extreme limit of its age, from sapling to its
present decrepitude and decay.
Copies of the photographs and text have been limited to ten ;
this
copy being presented to the Society through Mr. William "West,
E.L.S, The donor was voted the special thanks of the Society
for his gift.
Dr. Geoege Hexdeesox, F.L.S., offered " Some Eemarks on
the possible uses of Essential Oils in the Economy of Plant-life."
(See p. 46.)
A discussion followed in which Mr. T. Christy, Mr. "\V. C.
Worsdell, Mr. G. Massee, Mr. A. P. Young, Prof. J. Percival,
and the President took part, and Dr. Henderson replied.
The following papers were read :
1. " On the Electric Pulsation accompanying Automatic Movements
in Desmodium cfi/mns." By Prof. Jagadis Chunder Bose,
CLE. (Communicated by the President.)
2. " On Cerataphis Latanke, a peculiar Aphid." By Miss
Alice L. Embleton, B.Sc. (Communicated by Prof. G. B. Howes,
Sec. L.S.)
3. " On Specialization of Parasitism in the Erysiphacese." By
Mr. Ernest S. Salmon, F.L.S.
—
March oth, 1903.
Prof. Sydney H. Yines, E.E.S., President, in the Chair.
The Minutes of the last Meeting were read and confirmed.
Mr. Joseph Burtt Davy, Dr. Felix Eugen Fritsch, Mr. Eobert
Hall, and Mr. George Whitfield Smith were elected, and
Mr. Arthur Gro^e was admitted a Fellow.
Rev. T. E.E. Stebbing, F.E.S., exhibited a collection of Spiders
and Wasps from Singapore, made by Mr. C. J. Saunders.
(1) Spiders found in 11 clay cells built between the boards of
a thin book standing upright on a book-shelf ; the space } inch
broad by 5 inch high, and 4| to 5 inches long. Mr. Saunders