Vegetation of the Ottawa and some of its Tributaries. 349 



Grains. 



Carbonate of ammonia, _ _ _ 5.00 



Carbonate of lime, - - - - 29.50 



Carbonate of magnesia, (F,) 33.7 + 1 gr. (E,) 34.70 

 Carbonate of potassa, - _ _ _ 3.00 

 Chloride of magnesium, _ _ _ 1.92 



Chloride of sodium, (C, h,) 4.98 grs. +52.6 grs. (G, 6,) 57.58 

 Sulphate of magnesia, - - - - 6.00 



Sulphate of soda, ----- 5.46 

 Sulphate of lime, - _ - - 0.25 



Silica, - - - - - ■ - 0.20 



Oxide of Iron, (D,) (F,) - - - 1.55 



Extractive matter, - - - - - 5. 



150.16 



Gaseous matter. 



Cub. In. 



Carbonic acid, - - - - 68.57 



Atmospheric air, - - - - 4.57 



73.14 



Art. XVIII. — On* the Vegetation of the Ottawa and some of its 

 Tributaries [L. Canada.) ; by Prof. A. Benedict. 



Although the vegetation of North America is as diversified as its 

 soil and climate, yet perhaps no one of its subdivisions exhibits a 



Hyde Park, May 20, 1830. 



* To THE EDITOR. — DeUT Sir, I send you a short paper on the vegetation of 

 the Ottawa and some of its tributary waters, which I hastily drew up and read 

 before the Coll. of Nat. Hist, in the University of Vermont," from notes and memo- 

 randa made, whilst botanizing along its bank in the summer of 1827. Although in 

 botany my collections embraced every thing I could find, with date of flowering, 

 &c. yet as most of the indigenous plants of that district are also found in the United 

 States, and many of those which are not, are carefully described and duly credited 

 in the useful works of Prof Eaton, and Torrey ; I have therefore at present only 

 noticed such genera and species of plants as will, perhaps, best illustrate the gen- 

 eral features of the vegetation of the country, leaving a catalogue of all those I found 

 there, to some future day, when leisure and opportunity will have enabled mc, to 

 settle the character of such as are to mc, at present, doubtful. 



