188 THE NATURAL HISTORT [LETT. 
As I have seen no modern map of Scotland, I cannot pretend 
to say how accurate or particular any such may be ; but this I 
know, that the best old maps of that kingdom are very defective. 
The great obvious defect that I have remarked in all maps of 
Scotland that have fallen in my way is a want of a coloured 
line or stroke that shall exactly define the just limits of that 
district called the Highlands. Moreover, all the great avenues 
to that mountainous and romantic country want to be well dis- 
tinguished. The military roads formed by General "Wade a^^e 
so great and Roman-like an undertaking that they will merit 
attention. My old map, Moll's map, takes notice of Fort 
William ; but could not mention the other forts that have been 
erected long since : therefore a good representation of the chain 
of forts should not be omitted. 
The celebrated zigzag up the Coryarich must not be passed 
over. Moll takes notice of Hamilton and Drumlanrig, and sucli 
capital houses ; but a new survey, no doubt, should represent 
every seat and castle remarkable for any great event, or cele- 
l^rated for its paintings, &c. Lord Breadalbane's seat and beau- 
tiful policy are too curious and extraordinary to be omitted. 
The seat of the Earl of Eglintoun, near Glasgow, is worthy of 
notice. The pine-plantations of that nobleman are very grand 
and extensive indeed. 
Selrorne, March 9, 1775, 
