vi CONTENTS. 
Mr. Mature Hamitton’s Observations on Great Earthquakes on the 
West Coast of South America, particularly the great one of the 18th 
of September, 1833, which destroyed the City of Tacna, and other 
Places in Pert. .......scececeesceeeeereeeeees Rae cdsuesecadecdedundee dats eaeeaee tea 
Mr. Jutius Jerrreys on the Solvent Power exercised by Water at 
high temperatures on Siliceous Minerals ...........+4esseesee0e+ Pere nate 
Mr. Wiuttam Batp’s Account of the Construction of the Models of the 
Island of Achil, Clare Island, and the South-Western district of 
Mayo, in Ireland ..........sscesseseseneeeeesessnceecnecceeneseaeerssanes eeeeee 
ZOOLOGY AND BOTANY. 
Mr. Hueu E. Strickianp on the true Method of discovering the Na- 
tural System in Zoology and Botany .......sss+sseeseseseceneeeseneeseenees 
Professor Acassiz on the Development of the Fish in the Egg ......... 
Dr. Martin Barry on the First Changes consequent on Fecundation 
in the Mammiferous Ovum, with special reference to a Communica- 
tion ‘“‘ On the Development of the Fish in the Egg,”’ by Prof. Agassiz 
Mr. W. Danson on the Alpaca ......sccecscsesececeenccseeseececcccscccsessees 
Mr. G. T. Fox on the Subject of a Paper on the Structure of Whales, 
read at the Birmingham Meeting ........sscsecescseececeeecesescecessevees 
Dr. Macponatp on the Structure of Fishes, so far as the analogies can 
be traced between the Limbs of the Mammals and the Fins of Fishes 
Mr. James Wixson on the Salmon Fry.........-.++++ oceccenccscscscasoucnses 
Dr. Lizars on the Organs of Sense in the Salmon .............+. anepdnwes 
M. ScuomsurckK on the various Modes of Fishing employed by Indians 
in the West of Guiana ..........scecececececececncscecececeescenssseerecseseees 
Mr. James WILson on some Persian Insects .......+2+++++seeee Sue nsewseun 
Mr. Joun Goopsir and Mr. E. Fores on Pelonaia, a new genus of 
Ascidian Mollusca .......sccscecessssscsecececncnscscseescsescsseesscnseeuesesues 
Sir Jonn G. Datyewu on the Regeneration of Lost Organs discharging 
the Functions of the Head and Viscera, by the Holothuria and Am- 
phitrite, two Marine Ambirigls "s.cccenatieeessascacencecacdsaane aden eeaaeeeee 
Mr. Epwarp Forsss and Mr. Joun Goopsir’s further Researches on 
the British Ciliograda .......se.s.sececeerecsececcsesceesececeseesecssece sake 
Mr. R. PATTERSON On Medusa .....cscsececscccccecccececescccceccesctecees ai 
Professor Acass1z on Animals found in Red Snow .....-.sesseeessenees eae 
Dr. Epwin LanKEsTER’s Notice of Plants and Animals found in the 
Sulphureous Waters of Yorkshire ......++.-+++ ce ccccdececesescnsanvesenaves 
Dr. ALpripcE on the Pollen and Vegetable Impregnation ...... See 
Dr. A. Burn on the Growth of Cotton in India ........+...++- wisealeelewaee 
Mr. FEeLKIN on the Growth of Cotton .........esseseeeeees Seuss ccduepeaeenee 
Dr. G. A. Watxer Arnorr’s Remarks on the Synonyms and Affinities 
of some South African genera Of Platts .........-sssesesseeeeeseeseneeeeees 
Professor Ross on an Anomalous Form of the Plum, observed in the 
Gardens of New Brunswick ..........+- aut To cn ubite's oadexdtesecnosssnquneueeee 
MEDICAL SCIENCE. 
Dr. ALLEN THomson’s Account of some new Observations on the Struc- 
ture of the Gastro-intestinal Mucous Membrane, and more particu- 
larly of the Gastric and Intestinal Glands .......-..--++ aeeeeeeeet a mesenne 
Dr. Joun Rerp on the Manner in which the Vital Actions are arrested 
in Asphyxia ......00 doscssesbsossntosses soe tosapeb sucsscccebassearecsiesner enodas 
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