seed of that Poppy came to maturity which he had so 

 fertilized, and the other did not; the experiment was 

 frequently repeated with the same result. 



It is upon the knowledge of these principles of 

 nature that our countryman, Mr. Andrew Knight, has 

 been so successful in producing new apples, and varie- 

 ties of leguminous vegetables. By taking the Pollen 

 from one species and fertilizing the Pistilla of others 

 of a different kind, but of the same natural Genus, he 

 has produced a pea of a larger and finer sort than any 

 we were before acquainted with. 



The Stamina and Pistilla being demonstrated to be 

 essential parts of a plant, Linnaeus made them the 

 basis of his system, which he divided into twenty four 

 classes; twenty-three of which have their distinctions 

 founded on the number, and situation or arrange- 

 ment of the Stamina ; and the twenty-fourth is made 

 to include all those plants which, from the obscurity 

 of their fructification, did not allow of being included 

 in either of the preceding. 



The first eleven classes depend entirely upon the 

 number of the Stamina; as Class I. one Stamen; 

 Class II- two Stamina ; Class III. three Stamina, &c. 



Class XII. depends upon the number, with the 

 additional circumstance of their growing out of the 

 Calix. 



Class XIII. depends on the number, and their 

 growing out of the Receptaculum. 



Class XIV. and XV. depend on the relation of the 

 Stamina among themselves. The first of these has 



