To Students in Natural History. 



A third edition of the MANUAL OF BOTANY by 



Mr. Eaton, is in a state of preparation, and will be ready 

 for sale about the month of January next. The parts 

 describing the Phinogamons plants will be considerably 

 improved. The five last orders of the class Cryptogamia, 

 will be entirely written over. The Musci will be trans- 

 lated from B ridel, the Hepaticae from DeCandolte, the 

 Algae from Agardli, the Lichenes from the last work of 

 Acharius, and the Fungi from Persoon. Price 82. 



A critical CATALOGUE of plants within 30 miles of 

 the city of New- York, by Dr. John Torrey. Price gl. 



A second edition of the BOTANICAL DICTIONA- 

 RY by Mr. Eaton, is already published. Price SI. 



The BOTANICAL EXERCISES, by Mr. Eaton. 

 Price 50 cents. 



A second edition of the INDEX to the GEOLOGY of 

 the Northern States, by Mr. Eaton, is already published, 

 with two neat copper plates. It is entirely written aver, 

 and published under the direction of the Troy Lyceum. 

 It commences with a geological alphabet ; and is simpli- 

 fied throughout, with a view to assist the learner, as well 

 as to furnish the geologist with facts of importance to 

 the Science. Price SI 50, 



All the above books will be kept on hand, for sale by 

 Websters & Skinners, Albany ; by T. &J. Swords, New- 

 York; by Dobson and Son, Philadelphia ; by Howe & 

 Spalding, Ne w -Haven ; by Goodwin & Sons, Hartford ; 

 by Cumming & Hill iard, Boston : by W. S. Parker, 

 Troy ; by W. E.-^orman, Hudson 5 and by S. Butler, 

 Northampton.' 



