INTRODUCTION. 5 



wonder and admire; but, urged onward, be attempts to trace back effects to their causes; he 

 investigates, be discriminates, be analyzes, be combines, and, still proceeding in his course, en- 

 deavors to obtain a glimpse — imperfect it may be — of the mighty plan of creation, — a knowledge 

 of the grand scheme, by which the whole is blended into unity. 



, 



GARDEN OF PLANTS: THE "SUMMIT," AND VIEW OF PARIS. — (See p. 6.) 



"So various and manifold are the subjects of Nature's empire, that, were the life of one man, 

 however zealous and indefatigable he might be, lengthened out twenty, nay, a hundred times 

 beyond the allotted term, bis materials would be unexhausted ; he would still have much to study, 

 and, after all, leave a sysiema natures to be enlarged and corrected by those who should come 



