1904-5.] Meetings of the Society. 1189 
SECOND SPECIAL MEETING. 
Monday , 27 th March 1905. 
Dr R. H. Traquair, F.R.S., Vice-President, in the Chair. 
At the request of the Council, Dr Thomas Oliver, Professor of 
Physiology in the University of Durham College of Medicine, 
Newcastle-upon-Tyne, gave an Address on 
“Ankylostomiasis, or the Miner’s Worm Disease.” ( With 
Lantern Illustrations.) pp. 813-826. 
ELEVENTH ORDINARY MEETING. 
Monday , ls£ May 1905. 
Professor Geikie, LL.D., Vice-President, in the Chair. 
The following Communications were read : — 
1. On the Internal Structure of Sigillaria elegans of Brongniart’s 
“ Histoire des Vegetaux fossiles.” By Robert Kidston, F.L.S., F.G.S. 
(With Lantern Illustrations.) Trans ., vol. 41, pp. 533-550. 
2. Note on the Rainfall on the Drainage Area of the Talla Reservoir. 
By B. Hall Blyth, Memb. Inst. C.E., and W. A. Tait, Memb. Inst. 
C.E. pp. 616-629. 
3. Remarks on the Rainfall Records in the Talla Drainage Area 
during the years 1896 to 1902. By P. D. Donald, Assoc. Memb. Inst. 
C.E. Communicated by W. A. Tait, Memb. Inst. C.E. pp. 630-636. 
4. Variant Forms of Vanishing Aggregates of Minors of Axisy na- 
me trie Determinants. By Professor W. H. Metzler. pp. 717-721. 
It was proposed by Dr Horne, seconded by Dr Noel Paton; 
and carried : 
“ That from the beginning of next Session onward, all the Ordinary 
Meetings of the Society be held at 4.30 p.m., except four, to be 
held in the evening at 8 o’clock, viz. : — the first Meeting in 
November, in January, in March, and in June.” 
TWELFTH ORDINARY MEETING. 
Monday , 15 th May 1905. 
Sir John Murray, K.C.B., F.R.S., Vice-President, in the Chair. 
The following Communications were read : — 
1. A Form of Bolometer adapted for Physiological Investigations. 
By Dr Walter Colquhoun. pp. 827-830. 
