CONTENTS. 
IX 
Contributions to our Knowledge of the Structure and Development 
of the Beroidse. By Professor Allman, . . .519 
On the Anatomy and Classification of the Heteropoda. By John 
Denis Macdonald, Esq., R.N., F.R.S,, Surgeon of H.M.S. u Ica- 
rus.” Communicated by Dr Douglas Maclagan, . . 524 
On the Structure of Chondracanthus Lophii, with observations as * 
to Larval Form. By William Turner, M.B., and H. S. Wilson, 
M.D., Demonstrators of Anatomy, .... 525 
Investigation of an Expression for the Mean Temperature of a 
Stratum of Soil, in terms of the time of year. By J. D. Everett, 
M.A., Professor of Mathematics, &c. in King’s College, Windsor, 
Nova Scotia. Communicated by Professor Tait, . . 528 
Notice of the Catadioptric Altitude and Azimuth Circle. By Ed- 
ward Sang, Esq., ...... 528 
On the Nesting Birds of Linlithgowshire and Berwickshire. By 
the Rev. John Duns, F.R.S.E., Torphichen, . . . 532 
Note on Molecular Arrangement in Crystals. By Professor Tait, 535 
On the Condition of the Salmon Fisheries of England and Wales 
in 1861 ; with a Notice of some of the Modes of Fishing, espe- 
cially those practised in the Severn and Wye. By Sir William 
Jardine, Bart., F R.S., &c., ..... 539 
Cases of Poisoning by Goat’s Milk. By Alexander E. Mackay, 
M.D., Surgeon H.M.S. “ Marlborough,” . . . 542 
Note on the Electricity developed during Evaporation, and dur- 
ing Effervescence from Chemical Action. By Professor Tait and 
J. A. Wanklyn, Esq., . . . . 544 
On the Pressure Cavities in Topaz, Beryl, and Diamond, and their 
bearing on Geological Theories. By Sir David Brewster, K.H., 548 
On the Anatomical Relations of the Surfaces of the Tentorium to 
the Cerebrum and Cerebellum in Man and the Lower Mammals. 
By William Turner, M.B. (Lon d.), Senior Demonstrator of Ana- 
tomy in the University of Edinburgh, . . . 549 
On the Connection between Organic Force and Crystalline Force. 
By LI. F. Baxter, Esq., ..... 559 
On a recent Landslip. By the Rev. John Duns, Torphichen, . 560 
On the Rainfall in the Lake District in 1861. With some Obser- 
vations on the Composition of Rain-water. By John Davy, M.D., 
F.R.SS. Lond. and Edin., . . . ^ . . 563 
Observations on the Absorbing Power of the Human Skin. By 
Murray Thomson, M.D., F.C.S., Lecturer on Chemistry, Edin- 
burgh. Communicated by Dr Douglas Maclagan, . . 564 
On the Constitution of Mannite. By J. A. Wanklyn, Esq., and 
Dr Erlenmeyer, ...... 565 
On the Structure of Lerneopoda Dalmanni, with Observations on 
its Larval Form. By Wm. Turner, M.B. (Lond.), and H. S. 
Wilson, M.D., Demonstrators of Anatomy, . . . 569 
Memoir of the Life and Writings of Robert Whytt, M.D., Profes- 
sor of Medicine in the University of Edinburgh, from 1747 to 
1766. By William Seller, M D, F.R.S.E., F.R.C.P.E., . 570 
On a Difficulty in the Theory of Rain. By James Dalmahoy, Esq., 576 
