The many uses to which Caoutchouc is now applied, as well as its increasing importance as an article of trade, render it of peculiar interest, and more particularly so at the present time, from the circumstance that a new and abundant source of it in India has been lately pointed out. In the following observations I am anxious to draw attention to some facts which, though perhaps known to a few who have examined the subject with great attention, are generally unknown or overlooked.