9 
ZOOLOGICAL SECTION. 
1909. 
Nov. 25th—‘ Protective Resemblance and Mimicry.”—Dr. A. RANDELL 
Jackson, M.B., D.Sc. 
Illustrated with Lantern Slides. 
1910, 
Feb. 24th—Zoological Notes and Observations on the past year, contributed 
by the following Members :—THE CHAIRMAN (DR. W. 
H. Dosiz), Mr. J. ARKLE, DR. JAcKSoN, Mr. C. K. 
SIDDALL, Mr, J. THompson, THE CURATOR, and others. 
Notes on some rare and new additions to the Society’s Collec- 
tions by THE CURATOR (MR. ALFRED NEWSTEAD). 
A magnificent Specimen of the Osprey was exhibited. 
Several of the contributions, were illustrated by Lantern Slides. 
GEOLOGICAL SECTION. 
TgIo. 
Jan. 27th—‘‘The River Alyn.”’—Mr. HErBert A. Hatcu, M.Sc. 
Illustrated with Lantern Shides. 
Mar. 31st—‘ Life’s Failures.”— Miss E. G. SKEAT, D.Sc. 
Illustrated with Lantern Slides. 
NATURAL PHILOSOPHY SECTION. 
1909. 
Oct. 21st—‘‘ The Self-Purification of Rivers.’—Mr. W. D. ScouLiER, 
B.Sc., F.C.S. 
Illustrated by Diagrams, &c. 
1910. 
Feb. roth—‘ The Weight of the Earth: and how it has been ascertained.” 
Mr. R. Crecit Owen, B.Sc., F.C.S. 
Illustrated by Lantern Slides. 
MICROSCOPICAL SECTION. 
1910. 
April 28th—Paper on “The preparation of Insects for Microscopical Ex - 
amication.” —PRoF. R. NEWSTEAD, M.Sc. 
Some preparations of the mouth-parts of the common house-fly were 
distributed to working Members. 
Demonstration of High-Power Dark-Ground Illumination. — 
Mr. MICHAEL JOHNSON. 
Exhibition of some rare Diatoms, including Auleodiscus 
Superbus.—MR. JOSEPH DAVIES. 
Demonstration of Micro - Photography of Seeds of British 
Plants.—MRr. ALFRED NEWSTEAD, 
Account of the succession of Life in Troughs kept through the 
wioter, Mr. J, D, SIDDALL. 
