434 New Publications. 



and important original observations. The '■^ Besearches,^'' -which. 

 ought to be in the hands of every naturalist and medical prac- 

 titioner, may be regarded as an introduction to the more ex- 

 tensive vFork on odontology promised by our author. 



6. The Collected Works of Sir Humphry Davy, Bart. Edited by his bro- 

 ther John Davy, M.D., F.R.S. 8vo. Smith, Elder and Co., Comhill, 

 London. 1839. 



Two volumes of this valuable work are now before the pub- 

 lic. The first volume contains " Memoirs of the Life of Sir 

 H. Davy," by far the best biography of Davy hitherto publish- 

 ed, and worthy the high name of its accomplished author Dr 

 John Davy. The second volume contains early miscellane- 

 ous papers from 1799 to 1805 ; with an introductory lecture, 

 and outlines of lectures on chemistry, delivered in 1802 and 

 1804, by Sir H. Davy. This volume is mainly interesting on 

 two accounts : one, as illustrating the progress of chemical 

 discovery, and more especially of voltaic electricity ; the other, 

 as displaying the progress of the author's own mind, and the 

 formation of his literary character. 



It is presumed that this new, uniform, and beautifully got up 

 edition of the writings of Sir H. Davy, will not exceed ten 

 volumes, embracing the whole of his works, which were pub- 

 lished during the space of thirty years (1799 to 1829), a pe- 

 riod memorable in the history of chemistry, and in no small 

 part owing to his own discoveries. 



6. Memoir on the Mid-Lothian and East-Lothian Coal-Fields : with a 

 Map and numerous Sections. By David Milne, Esq. F.R.S.E., and 

 F.G.S. 4to, pp. 162. Edinburgh, William Blackwood and Sons : 

 T. Cadell, Strand, London. 1839. 



Mr Cunningham's prize-essay on the Geology of the Lo- 

 thians ; the Geology of the Lothians and Fife, by Mr Mac- 

 laren ; and this third valuable volume by Mr Milne, afford 

 ample proof of the activity of our Edinburgh geologists, and 

 also of the interesting nature of the Lothian portion of the 

 Middle District of Scotland. This memoir is distinguished 

 from those already mentioned, by the fulness of its details in 

 regard to the geological and economical relations of the 



