250 Professor Buckland’s Instructions, §c. 
The best authorities to be consulted are engineers, min- 
ers, serie well-diggers, and quarry-men: the latter have 
in the course of their work, constant 5) Absa in A of col- 
focting: wae is most valuable, viz. fragments of stone 
containing in them the petrified remains of vitae and 
vegetables; and it requires no knowledge of geology to ob- 
tain from such persons good information and specimens. 
t is desirable to get From every country — of 
all the varieties of rocks occurring in it; e. g. of building- 
stone, free stone, marble, or peace slate, and all kinds of 
commo; every variety of fossil shells, 
plants, bones and mathition? ores, with a list of all the places 
where similar rocks and similar organic remains are known 
to exist. 
If several varieties of stone occur in the same ole or 
quarry, specimens of each should be taken and numbered 
according to their order of succession, marking the upper- 
- 1. and thence descending. The thickness and 
oS of =< bed should be also mentioned, and whether 
shells, plants, or pebbles in them; if they do, 
; asene each should be collected. 
tT the rocks are stratified, i. e : divided. into beds, it 
should be noticed whether they are horizontal or inclined, 
or contorted. 
If inelined it should - — at what angle, and towards 
what point of the com 
contorted, a sketch wd be desirable. 
Slight sketches of any sections of strata on the sea-coast, 
their inclination, and marking the changes that oc- 
cur in their substance and colour, will be of great value. 
here there are wells, it will be desirable to get a list of 
the strata sunk through in digging them, giving t the thickness 
of each from the surface downwards. 
In volcanic districts to get a list of volcanos now in action, 
and of the craters of volcanos ; stating their position and 
distance from the nearest town. 
To get a list of all places known to contain coal, bitu- 
amen, | abaster, metallic ores, and precious stones; 
their kinds, and to 58% pee they have been 
: ‘Toes besa pie, specimens of the coal itself, and of the 
‘“aiterentstrata sunk through to obtain it, es those which 
med Hingeensiome of plants on them, will be valuable: Also 
