’ PREFACE. ix 
his own expense, has ventured to collect and 
publish these Essays in their present form. I 
wish I had it in my power to present to his 
notice some production that would be more 
worthy of his indefatigable zeal in the cause of 
science. That he may receive ample patronage 
from a liberal public, and a remunerating com- 
pensation for the trouble which he has been put 
to, is the ardent. wish of his sincere friend, 
CHARLES WATERTON. 
Walton Hall, Dec. 2. 1837. 
