52 Fluor Spar, ^c. in Ohio. 



As to the manner in which the work of Professor Cleave- 

 land is executed, the remarks which we already made, have iu 

 a good degree anticipated this head. 



We cannot, however, dismiss the subject Avithout adding 

 that, in our opinion, this work does honour to our country, 

 and will greatly promote the knowledge of mineralogy and 

 geology, besides aiding in the great work of disseminating a 

 taste for science generally. Our views of the plan we have 

 already detailed. The manner of execution is masterly. Dis- 

 crimination, perspicuity, judicious selection of characters and 

 facts, and a style chaste, manly, and comprehensive, are among 

 the characteristics of Professor Cleaveland's performance. It 

 has brought within the reach of the American student the ex- 

 cellencies of Kirwan, Jameson, Haiiy, Brochant, Brongniart, 

 and Werner ; and we are not ashamed to have this work com- 

 pared with their productions. In our opinion Professor 

 Cleaveland's work ought to be introduced into all our schools 

 of mineralogy, and to be the travelling companion of every 

 American mineralogist. 



We trust that all cultivators of mineralogy and geology in 

 this country, will willingly aid Professor Cleaveland in en- 

 larging his list of American localities for a second edition ; and 

 we hope that he will repay them, at a future day, by giving 

 us a distinct treatise on geology, with as particular a delinea- 

 tion as possible of the geological relations of the great North 

 American formations. Mr. Maclure has, with great ability, 

 sketched the outline ; but much labour is still needed in filling 

 up the detail. 



Art. III. JVezo Locality of Fluor Spar, or Fluat of Lime 

 and of Galena, or Sulphur et of Lead, 



K. JOSEPH BALDWIN, formerly of Connecticut, now 

 residing near Shawnee Town, in the Illinois Territory, has 

 given us some interesting specimens of fluor spar. They are 

 found not far from Shawnee Town, on the banks of the Ohio ; 



