APPENDIX. 159 
of such stations be noted as to its rate and direction; and 
in regard to the valleys which intersect the slope, let their 
width, direction, and general rate of declivity, and the section 
and velocity of their streams, be ascertained, and the pro- 
bable course of the rivers, as far as it can be determined by 
the appearance of the country, and the reports of the natives, 
giving them the aboriginal names when they can be dis- 
covered. ‘The altitude and acclivity of remarkable peaks or 
_ ridges should also be investigated along with the nature of 
their climate, and the clouds formed upon them. It will be 
requisite also to mark with care the nature of the winds and 
sky as well as the temperature at stations in the neighbour- 
hood, and to note the influence which changes of that de- 
scription have upon the barometer, and observe also. the 
temperature of deep pools or lakes and copious springs. 
The geological structure of the country is especially 
worthy of minute and extended observation, and will require 
that notes be kept of all such appearances as indicate or 
accompany changes of structure in the formation, or of com- 
ponents in the soil and surface, especially such fossil remains 
of plants or animals as may occur, and metallic ores, and 
that proper specimens accompany these notes, ticketed on 
the spot with precise localities. 
The botanical researches of the expedition will extend 
to the preservation of specimens of plants not found in the 
Colony, and especially of transportable roots, and the seeds 
of ali such as may be found in a ripened state, noting 
‘localities and the varieties of aspect which vegetation puts 
on in different situations. In regard to other branches of 
Natural History, as it is obvious, that after a short experi- 
ence of research under your direction, almost every one will 
be able to recognize and preserve what is rare and novel, no 
further instruction need be given, excepting the general expres- 
