1816.] On Mineralogical Surveys. 103 
gical description of the county of Perth. As it may prove interest- 
ing to some of your readers, { hope you will insert it in your 
Annals of Philosophy. 
I remain, my dear Sir, yours truly, 
45, George-square, Oct, 30, 1815. Rozguert JaMEson. 
—TiP 
I. Geographical Part. 
i. General and particular geographical account of the county. 
2. Description of the surface of the county.—A. Ranges of 
mountains. Extent, mode of connexion, shape, acclivities; heights 
as ascertained by the barometer.—B. Single mountains. Shape, 
acclivities, magnitude, height.—C. Valleys. Extent, shape, cha- 
racter of cliffs and precipices, inclination and nature of the bottom, 
height above the level of the sea, and mode of connexion with 
neighbouring valleys.—D. Plains. Extent, appearance of their 
surfaee, height above the sea. 
3. Description of rivers. Magnitude; under which is included 
their length, breadth, and depth; falls; height above the level of 
the sea at different points of their course; nature of their banks ; 
character of their scenery ; comparison of their former with their 
present state ; the physical and chemical properties of their water ; 
temperature ; and, lastly, descriptions or accounts of the animals and 
plants that inhabit them. 
4. Description of lakes. Magnitude; under which is included 
their length, breadth, circumference, and depth; temperature at 
different depths; colour; height above the level of the sea; che- 
mical properties of their waters; animals they contain ; plants that 
grow in them ; character of their scenery. 
5. Description of springs. Magnitude; temperature; height 
above the level of the sea; rocks from which they issue ; their che- 
mical and physical properties; incrustations found around them ; 
uses ; plants that grow in their vicinity. 
6. General observations on the physiognomy or surface of the 
county, in relation to the other counties in Scotland. 
Il. Mineralogical Part. 
1. Description of the different soils, according to a new method ; 
also chemical analyses of the more remarkable and curious soils. 
2. Description of bogs and mosses, Their magnitude ; height 
above the level of the sea; different kinds of peat they contain; 
various organic remains found in them; uses ; draining, &c.; plants 
that grow on their surface, and animals that live on and near them; 
chemical composition and properties of the different varieties or 
peat. 
3. Description of marl beds. Their Jength, breadth, and depth ; 
