botscae ‘memorandum by Dr Walker. is Oct. 30. 
As many young gentlemen are just now about to sail for India, the 
following directions are inserted at this time. 
( 
A MEMORANDUM given by Dr Walker, profefsor of 
natural history, Edinburgh, to a young gentleman 
going to India, with some additions. 
’-r: To be provided with a good Farenheit’s thermome- 
ter, inclosed in a glafs tube, that can be laid in water, for 
taking the heat of the sea in different latitudes, and espe- 
cially for taking the heat of springs in India wherever you 
can meet with them. E 
2. To be careful to pick up at sea, all sea-weeds and 
_ marine animals that come within reach of the thip, and to 
dry and preserve them in paper or otherwise. 
3. To be attentive to all birds that-are to be seen fem 
the fhip; to mak the Englifh or other names by which 
they_are known among the sailors, and the latitudes where 
they' first appear and disappear. - 
4. Tokeep a regular journal from day to day, including 
the above,. and all other observations in natural history 
that may occur,—particularly any remarkable appearances 
in the weather, respecting the winds, rains, thunder and 
lightning, calms, tornadoes, whirlwinds, or waterspouts.’ 
5. To notice the alterations in the colour of the sea, 
and if pofsible the causes from whence they, proceed ;. espe- 
cially the colour proceeding from minute animals, with a 
description of these animals. 
6. On approaching the Cape of Good Hope, the Cape 
pigeons, or pintado birds, are numerous: it would be 
worth while, if opportunity offers, to preserve one or two 
of them by stuffing their fkins, and to mark at what di- 
