232 Migration of Birds. — Mineralogy, 



rieties of the fig-tree cultivated on the shores of the Mediter- 

 ranean, although he has not yet visited L.angnedoc : he has 

 designed, coloured and debcribed them mimUely. 



M. ToUard, in his history of useful vegetables introduced 

 within the last ten years into French agriculture, states that the 

 Dalliia, a new plant, tlie flower of which is a beautiliil onia- 

 nient, is more important for its roots, which are larger and al- 

 most as good to eat as'the roots of the topinaviboiir, 



[ r<) lie coiitiiiiicfl.j 



XLII. Intelligence and Miscellaneous Articles. 



MIGRATION OF BIRDS. 

 rn Mancliestfir, March 4, 1815. 



Sir, — X HE last volume of the Memoirs of the Philosophical 

 Societv of Manchester contains a valuable Essay on the Migra- 

 tion of Birds, bv Mr. Gough, of Kendal. Since the appearance 

 of this paper I have made some inquiries resjiecting migrating 

 birds, and find it very difficult to meet with any thing satisfac- 

 tory on the subject, from any other part of Europe. It seems 

 that few British travellers, or even foreign naturalists, have paid 

 that attention to these transitory visitors which the subject de- 

 serves ; for I am at a loss to know where a series of accurate ob- 

 servations respecting them can be met with, besides those stated 

 by Mr. Gough. It is very desirable that their regular appear- 

 ance and disappearance in tiie different latiludcs of Europe 

 should be ascertained, as it would considerably illustrate the his- 

 tory of this class of the feathered tribe. It would, I believe, be 

 interesting to many of your readers, if you could procure, through 

 tbe medium of foreign publications, or ♦roia your extensive cor- 

 re.s'jondence abroad, an account of these birds from any other 

 part of the globe. If such account was somewhat similar to 

 Mr. Gough's, it would either throw further light on his theory, 

 or else produce facts that might be combined with such cir- 

 cumstances as may tend to render this dark and controverted 

 subject more clear. By inserting the above in your valuable Jour- 

 nal, it may draw the attention of some of your numerous cor- 

 respondents to this annising subject ;. and will oblige, 



Sir, your dbedient servant^ 

 To Mr. Tilloch. S. K, 



MINERALOGY. 



Newcastle-upon-Tyne, March 8, 1815. 

 Sir, — :In your last number I have noticed two questions put 

 ^0 mC; respecting facts stated in a paper 1 transmitted last year 



"to 



