BY SIR JOHN F

W. HERSCHEL, F. R. S., etc.

In one neat volume, crown octavo, with six plates and numerous wood-cuts.

With this, we take leave of this remarkable work, which we hold to be, beyond a doubt, the greatest and most remarkable of the works in which the laws of astronomy and the appearance of the heavens are described lo those who are not mathematicians nor observers, and recalled to those who are. It is the reward of men who can descend from the advancement of knowledge to care for its diffusion, that their works are essential to all, that they become the manuals of the proficient as well as the text-books of the learner. - Athenoeum.

Probably no book ever written upon any science has been found to embrace within so small a compass an entire epitome of everything known within all its various departments, practical, theoretical, and physical. - Examiner.

A text-book of astronomy, from one of the highest names in the science. - Silliman's Journal.

Baron Humboldt's New Work

Now Ready.