420 Proceedings. 



Papers. — 1. " The Maintenance of the Sun's Heat," by 

 Professor F. D. Brown. (Abstract, Transactions, p. 394.) 



2. " Notes on Parkinson's Petrel (Procellaria parkinsonii)," 

 by A. Keischek. (Transactions, p. 87.) 



3. " Notes on Gould's Petrel (Procellaria gouldi)." by A. 

 Keischek. (Transactions, p. 90.) 



Foukth Meeting. 2ith August, 1885. 



Hon. Colonel Haultain in the chair. 



New Member. — J. Coom, C.E. 



Papers. — 1. " Notes on Cook's Petrel (Procellaria cookii)," 

 by A. Eeischek. (Transactions, p. 92.) 



2. " The Sphygrnograph," by J. Murray Moore, M.D. 



The author traced the development of pulse-recorders generally, from 

 the first ingenious attempts of the Eev. S. Hales to measure the force and 

 rhythm of the arterial pulsations of the lower animals, to the later experi- 

 ments of Viererdt in Germany, and Marey in France, en the human subject. 

 The construction of Dudgeon's sphygrnograph, the instrument now in 

 general use, was fully explained, and its mode of action pointed out. A 

 large number of diagrams of pulse tracings were exhibited, and the differ- 

 ences in the tracings produced by the action of certain diseases on the 

 circulatory system was clearly and fully demonstrated. 



3. " Prehistoric Weapons," by J. Martin, F.G.S. 



This was a verbal description of certain stone, bone, and bronze 

 weapons from the Swiss lake-dwellings, presented to the Museum by the late 

 Mr. J. T. Mackelvie, and a comparison between them and similar articles 

 from other parts of Europe and North America. Mr. Martin's remarks were 

 copiously illustrated by lime-light views and diagrams. 



Fifth Meeting. 21s* September, 1885. 

 J. A. Pond, President, in the chair. 



New Members. — E. Bell, Captain Clayton, G. Cozens, W. 

 Macgregor Hay. 



Papers. — 1. "Notes on the New Zealand Puffin," by A. 

 Keischek. (Transactions, pp. 93 and 95.) 



2. " On a new Variety of the Tuatara," by A. Keischek. 

 (Transactions, p. 108.) 



3. " The Influence of the Means of Transit on the Social 

 Condition of the People," by S. Vaile. 



Sixth Meeting. 19th October, 1885. 



J. A. Pond, President, in the chair. 



New Member. — L. Cussen. 



Papers.— 1. " Description of New Zealand Spiders," by A. T. 

 Urquhart. (Transactions, p. 184.) 



