330 Remarks on Chemical Theory, and on 



solves, and the water it acquires in crystalization, this state- 

 ment seemed less incredible than at first. 



I have deposited specimens of the gangue, of the ore in 

 its various conditions, the crystals, &lc. in the New-England 

 Museum, Boston. JOHN LOCKE. 



Art. XIII. — Remarks on some points of Modern Chemical 

 Theory, with a notice of " the Elements of Chemical Sci- 

 ence, in two volumes, ivith plates ; by John Gorham, M. 

 D. Member of the American Academy, and Professor of 

 Chemistry in Harvard University, Cambridge.'*'' 



Homo naturae minister et interpres. — Bacon. 



The present period is distinguished by wonderful mental 

 activity ; it might indeed with great propriety be denominated 

 the intellectual age of the world. At no former period, has the 

 mind of man been directed, at one time, to so many and so use- 

 ful researches. Name whatever department of human knowl- 

 edge you please and you can at once, find men of talent and in- 

 dustry vigorously engaged in pushing its interests, and extend- 

 ing its boundaries, while the press is prolific, beyond all for- 

 mer example, in productions upon every art and every sci- 

 ence. Even that department of knowledge, whose ele- 

 ments admit of no extension or modification, is as a practi- 

 cal subject, pressed with unprecedented vigor and success 

 into the still savage recesses of all the continents ex- 

 cept one, and to the remotest islands sprinkled in the In- 

 dian, the Southern and the Pacific oceans. Every thing 

 that relates to man's duties and rights, as a moral, social and 

 intellectual being — all that concerns his mental' powers in 

 their varied operations, and all that respects the physical ex- 

 istences around him, is explored with unceasing industry and 

 perseverance. The physical sciences have, in this general 

 career of intellectual effort, attracted a distinguished degree 

 of attention, and the civilized world is filled both with ama- 

 teurs and with labourers in every department of this un- 

 bounded field. A century has nov/ passed, since (principal- 

 ly by the labours of Newton) the mechanical laws of the 

 universe have been, as to their most important features, defi- 

 nitely settled ; the last century has added comparatively lit- 



