Vlll CONTENTS. 



Page 



muth, with reference to the Researches of Dr. Andrews ; 



and on the Action of Sea-water on Iron, &c 544 



New Books: — Mr. Lea's Synopsis of the Family of Naiades : 



Bibliographical Bulletin 548 



Proceedings of the British Association for the Advancement of 



Science, Meeting of 1 837, at Liverpool 551 



Gaseous Diffusion 559 



Chlorosulphurets of Lead, Copper, Bismuth, and Zinc 560 



Polygalic Acid 561 



Modified Polygalic Acid 562 



Artificial Production of Rubies 563 



Theory of Organic Combinations 564? 



A new Organic Acid 564* 



Sulphonaphthalic Acid 565 



Conservation of living Plants during long Voyages 566 



Shooting Stars 567 



Correction in the Rev. N. S. Heineken's Paper on the Shock- 

 multiplier 567 



Meteorological Observations 567 



PLATES. 



I. A Plate illustrative of Mr. Brooke's Paper on the Crystallographical 

 Identity of Phacolite and the Irish bipyramidal Levyne with Cha- 

 basie ; and of the Rev. J. B. Reade's Paper on Structure in the 

 Ashes of Plants. 



II. A Plate illustrative of the Rev. T. Knox's Paper on his new Rain- 

 Gauge, and of Mr. W. C. Williamson's Paper on the Affinity of 

 certain Fossil Scales of Fish to those of the recent Salmonidce. 



ERRATA. 



P. 447, 1. 9 from the bottom, for " which the air solidifies," read 



" which avidity the air satisfies." 

 P. 460, 1. 5 from the bottom, for H If a wire having a moist sponge 



be attached," read " If a wire have a rnoist sponge attached," &c. 



(See p. 567.) 

 P. 492, 1. 4, for " a function of those coefficients," read " a function 



of those constants." 

 P. 516, 1. 16, for " carbonic acid," read "carbonic oxide." 



