Review of Cleaveland^s Mineralogy. 35 



all the flats and sharps. Had the examination been more ex- 

 tensive, the results might be relied on with greater assurance 

 as accurate ; but the general similarity, not only in the struc- 

 ture of different musical compositions, but in the comparative 

 frequency of the different keys indifferent authors; is so great, 

 that a more extensive examination was thought to be of little 

 practical importance. 



(Tb be continued.) 



Art. II. Review of an elementary Treatise on Mineralogy 

 and Geology, being an introduction to the study of these 

 sciences, and designed for the use of pupils ; for persons 

 attending lectures on these subjects ; and as a companion 

 for travellers in the United States of America — Illustrated 

 by six plates. By Parker Cleaveland, Professor of 

 Mathematics and Natural Philosophy, and Lecturer on 

 Chemistry and Mineralogy in Bowdoin College, Member 

 of the American Academy, and Corresponding Member of 

 the Linncean Society of Nezo England. 



itum est in viscera terras i 



Quasque recondiderat, Stygiisque adraoverat umbris, 



Effodiuntur opes ■ Ovid. 



Boston, published by Cummings and HiUiard, No. 1, 

 Cornhill. Printed by HiUiard ^ Metcalf ut the Univer- 

 sity Press, Cambridge, New England. 1816. 



X HIS work has been for some time before the public, and 

 it has been more or less the subject of remark in our various 

 journcJs. It is, however, so appropriate to the leading ob- 

 jects of this Journal, that we cannot consider ourselves as 

 performing labours of supererogation while we consider the 

 necessity, plan, and execution of the treatise of Professor 

 Cleaveland. 



An extensive cultivation of the physical sciences is peculiar 

 to an advanced state of society, and evinces, in Ihe country 



