Viii CONTENTS. 



Page 



New Books : — J. R. Young's Analytical Geometry 602 



Tartaric and Paratartaric Acids, etc 605 



M.T. de Saussure on the Action of Fermentation on a mixture 



of Oxygen and Hydrogen Gases 607 



The Action of Sulphate of Ammonia upon Glass 608 



Index 609 



PLATES. 



I., and II. Illustrative of Dr. Falconer and Capt. Cautley's Paper 

 on Fossil Quadrumana, and of Col. Colvin and Mr. Peinsep's 

 Notice of additional Fragments of the Sivatkerium. 



III. and IV. Illustrative of Dr. Schleiden's Memoir on the Develop- 

 ment of the Organization in Phaenogaraous Plants, and of Mr. F. 

 Watkins*s Paper on Electro-magnetic Motive Machines. 



ERRATA. 



Page 12, equations {7) for n in both places read n,,. 



Page 13, line 21,/or (1 — - sin {71, t — kx)) read (1 -- sv^?{n^ t — kx). 



Page 46, line 5, /or latter read former. 



23 /or -?r read t. 



ar a^ 



Page 28, 29, for Walgon read Watson. 



We have been kindly furnished by Dr. Schleiden with the following 

 errata which occur in the translation of his paper. 



Page 175, line 6, for their points, read the extreme point of the axis 



Ibid, in the note, line 6, the plumula in this family becomes envelopedhy 

 means of an elevation of the cotyledon perfectly closed 



Page 177, line 4, after disproportionately large, — what in the expanded 

 flower has been called pale<s. 



Ibid, line 3 note, the hyphen to be inserted after 3, — two 3-leaved. 



Page 182, line 18, instead o/" again deviate, &c. read require an explana- 

 tion of structure different from that which is commonly given, must be in- 

 cluded, &c. 



Page 183, line 2, instead of thesGy read this. 



Page 186, 9 lines from bottom, for almost entirely compressed, read 

 entirely supplanted 



Ibid. 7 lines from bottom, after thin insert inner. 



Page 409 line 39 for C read 6 



40 for A read A 



Page 410 line 5 for N^ Na CI, NaN read Na^a Cl, Na 

 Page 463 line 10 /or sodium read iodine. 



