Vlll CONTENTS. 



Page 

 Major E. Madden and Captain R. Sthachey's Notes on the Botanical Geo- 

 graphy of part of the Himalaya and Tibet ; 72 



Dr. Thomas Thomson on the Botanical Geography of Western Tibet 73 



Zoology. 



Mr. Joshua Alder and Albany Hancock's Descriptions of two New Spe- 

 cies of Nudibranchiate MoUusca, one of them forming the type of a New 

 Genus; with the Anatomy of the Genus 74 



■ on the Branchial Currents of 



Pholas and Mya 74 



Mr. J. Atkinson on Sea Sickness, and a New Remedy for its Prevention 75 



Mr. Busk's Drawings of New Species of Zoophytes 76 



Professor E. Forbes on some Indications of the Molluscous Fauna of the 

 Azores and St. Helena 76 



on a New Testacean discovered during the Voyage of 



H.M.S. Rattlesnake 77 



Mr. J. H. Gladstone on a Sample of Blood containing Fat 77 



Mr. Thomas H. Huxley's Observations on the Genus (Sajrif^o 77 



Account of Researches into the Anatomy of the 



Hydrostatic Acalephse • 78 



• Description of a New form of Sponge-like Animal 80 



Mr. E. J. Lowe on the Land and Freshwater MoUusca found within seven 

 miles of Nottingham 80 



Dr. W. Macdonald on the Antennae of the Annulosa, and their Homology in 

 the Macrourals 81 



Mr. C. W. Peach on some recent Calcareous Zoophytes found at Ipswich, 

 Harwich, &c 81 



Mr. Lovell Reeve's Observations on the Geographical Distribution of the 

 Land MoUusca 82 



Mr. J. Robertson's Observations on Pholas 82 



Mr. Thomas Williams on the Structure of the Branchiae and Mechanism of 

 Breathing in the Pholades and other Lamellibranchiate MoUusks 82 



Physiology. 



Mr. T. G. Hake on a New Apparatus for supplying Warm Air to the Lungs 83 



Mr. Richard Fowler on the Correlation of Vitality and Mind with the 

 Physical Forces 83 



GEOGRAPHY AND ETHNOLOGY. 



Mr. George Barber Beaumont on the Origin and Institutions of the Cymri 84 



Dr. C. T. Beke's Summary of Recent Nilotic Discovery 84 



Mr. G. A. BoLLAERT on the Meteoric Iron of Atacama 84 



Mr. W. J. BoLLAERT on certain Tribes of South America 84 



Mr. J. B. Brent's Comparison of Athletic Men of Great Britain with Greek 

 Statues 84 



Mr. R. Budge's Communication relative to the Great Earthquake experienced 

 in Chile, April 2, 1851 : in a Letter to Mr.W. Bollaert, dated AprU 17, with 

 Observations by the latter 85 



Mr. W. John Crawfurd on the Negro Races of the Indian Archipelago and 

 Pacific Islands 86 



