Vil 
Le Vaillant, Wilson, and Azara, are never failing sources 
of information to the searcher after truth. ‘The observa- 
tions of such men, who recorded Nature as she really is, 
and who cared very little for the fashionable systems of the 
day, may be for a time neglected: but they must finally 
assume that importance which is ever attached to unbiassed 
and disinterested testimony. To this honourable list our 
own country can furnish other names. The habits and 
economy of our native birds have been accurately and 
patiently investigated by those lyncean naturalists, White, 
Montague, and Selby, while their internal structure is now 
engaging the attention of Mr. Yarrell, a Gentleman emi- 
nently qualified by long study, and matured reflection, for 
such a task. 
In Conchology we have been more desirous to illustrate 
groups, than species; the latter will be done, on a very 
extensive scale, in the forthcoming work of Mess. Sowerby. 
From the patient labours, and cautious deductions, of 
Dr. Horsfield, we expect a more perfect elucidation of the 
Lepidopterous Insects than has yet, perhaps, been attempt- 
ed. As this will be the result of careful analysis, we shall 
place a high degree of confidence in the views it may deve- 
lope. 
In conclusion, it may be as well to add, that our views on 
several of the higher groups, here but slightly noticed, will 
be more fully explained in another work, now preparing 
for Publication. 
Wii: 
Tittenhanger Green, St. Albans, 
24th July, 1829. 
