ON FACT VS. THEORY 



Taking, then, this latter, the highest sub- 

 kingdom, we find that it separates into two broad 

 divisions, called classes, one of which is distin- 

 guished by bearing its seeds in enclosed packages 

 called ovaries; the other bearing seeds which are 

 exposed, or naked. The first of these classes 

 includes the vast majority of seed-bearing plants; 

 the other including principally those trees, like 

 the pine and the cypress, which bear their seeds 

 in open cones. 



Next, on our chart, we shall find that the class 

 is subdivided into orders. The order represents 

 a collection of related families. As an example, 

 the order Rosales is made up of the rose family, 

 the bean family, the cassia family, the mimosa 

 family and twelve other families closely allied. 



Below the order comes the familj^ — a division 

 which is still broadly inclusive; the rose family 

 for example taking in not only the rose, itself, 

 but the apple, the blackberry and sixty-two other 

 plants whose close relationship might not at first 

 be evident. 



From the family we next narrow down to the 

 genus — which separates the rose from the apple 

 and the blackberry and gives each its own classi- 

 fication. 



Beneath the genus there comes the species. 



And beneath the species the variety. 

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