CONTENTS. 
Opening Address, Session 1862-63. Bj Principal Forbes, Page 2 
On the Representative Relationships of the Fixed and Free 
Tunicata, regarded as two sub-classes of equivalent value; with 
some general remarks on their Morphology. By John Denis 
Macdonald, R.N,, F.R.S., Surgeon, H.M.S. “ Icarus.” Com- 
municated by Professor Maclagan, . . . ,46 
On the great Refractor at Elchies, and its powers in Sidereal Ob- 
servation. By Professor C. Piazzi Smyth, Astronomer-Royal 
for Scotland, . . . . . .4/ 
Biographical Account of Professor Louis Albert Necker, of Geneva, 
Honorary Member of the Royal Society of Edinburgh. By 
David James Forbes, D.C.L., F.R.S., V.P.R.S. Ed., Principal 
of the United College of St Salvador and St Leonard, in the 
University of St Andrews, . . . . .53 
On the Structure and Optical Phenomenon of Decomposed Glass. 
By Principal Sir David Brewster, . . . .76 
Notes on the Anatomy of the Genus Firola. By John Denis 
Macdonald, R.N., F.R.S., Surgeon of H.M.S. “Icarus.” Com- 
municated by Professor Maclagan, . . . . 76 
On the Zoological Characters of the living Clio caudata, as com- 
pared with those of Clio horealis given in Systematic Works. 
By John Denis Macdonald, R.N., F.R.S., Surgeon of tl.M.S. 
“Icarus.” Communicated by Professor Maclagan, . .76 
Notes on the Geology of Liineburg, in the kingdom of Hanover. 
By the Rev. Robert Boog Watson, . . . .79 
On the Occurrence of Stratified Beds in the Boulder Clay of Scot- 
land, and on the Light which they throw upon the History of 
that Deposit. By Archibald Geikie, Esq., F.G.S., . . 84 
On the Influence of Weather upon Disease and Mortality. By 
R, E. Scoresby-Jackson, M.D., F.R.S.E., F.R.C.P., Lecturer on 
Materia Medica and Therapeutics at Surgeons’ Hall, Edinburgh, 86 
History of Popular Literature, and its Influence on Society. By 
William Chambers, Esq. of Glenormiston, . . .88 
Sketch of the Recent Progress of Sanskrit Literature. By John 
Muir, D.C.L., LL.D., . . . . . 90 
