Meteorological Essays and Observations, 379 



relation to these matters, deserve notice ; and though much 

 of Mr. Bull's essay is not applicable to our case, it contains 

 a variety of interesting facta and information : his experiments 

 appear to have been very carefully conducted, and should 

 be consulted by all those who are engaged in similar in- 

 vestigations. 



Meteorological Essays and Observations. By J. Frederic 

 Daniell, Esq., F.R.S. Second Part, 1827. 



We hope to be able in our next Number to enter into a 

 detailed examination of the subject of Mr. Daniell's inquiries ; 

 at present, therefore, our object is merely to announce the 

 second edition of his valuable and laborious essays, and the 

 publication of the present second part, in which, for the con- 

 venience of those who possess the former edition, all the new 

 matter is collected. It includes the following essays : — 



1. On the Trade winds, considered with reference to Mr. 

 Daniel I's theory of the constitution of the atmosphere ; in a 

 letter from Capt. Basil Hall, R.N., F.R.S. 



2. On evaporation as connected with atmospheric pheno- 

 mena. 



3. On climate, considered with regard to horticulture. 



4. On the oscillations of the barometer. 



5. On the gradual deterioration of barometers, and the 

 means of preventing the same. 



6. Addenda and notes — among which will be found a 

 valuable table of the elastic force of aqueous vapour, calcu- 

 lated by Mr. Galbraith from the experiments of Dr. Ure, by 

 the formula of Mr. Ivory. 



Philosophical Transactions of the Royal Society of London , 

 for the year 1827. Part II. 



The following are the contents of this Part of the Society's 

 Transactions: — 



On a new form of the differential thermometer, with some of its 

 applications. By William Ritchie, A.M., rector of Tain Academy. 

 Communicated by J. F. W. Herschel, Esq., Sec. R.S. 



On the structure and use of the submaxillary odoriferous gland 

 in the genus Crocodilus. By Thomas Bell, Esq., F.L. and G.S.S. 

 Commrunicated by Sir Everard Home, Bart , V.P.R.S. 



On the permeability of transparent screens of extreme tenuity 

 of radiant heat. By William Ritchie, A.M., rector of Tain Aca- 

 demy. Communicated by J. F. W. Herschel, Esq., Sec. R. S. 



