ON FACT VS. THEORY 



at most, but a few hundred years. It has behind 

 it, who shall say, how many tens of thousands of 

 generations of ancestry which, coming before 

 man, went by unobserved yet which, under new 

 environment, are continually bursting forth to 

 confuse us. 



How can man, with only one ten-thousandth 

 of his subject revealed to him, be expected to make 

 charts or maps which shall withstand onslaught, 



or be superior to criticism? 



***** 



For the sake of ready understanding, we may, 

 however, summarize plant life into the broad 

 classifications outlined above. 



First, the vegetable kingdom, which includes 

 all plants. 



Second, the subkingdom or phyla, six or seven 

 in number. 



Third, the class, which ranks above an order 

 and below a phylum. 



Fourth, the order, which ranks between the 

 class and the family. 



Fifth, the family, which ranks below an order 

 but above the genus. 



Sixth, the genus, which ranks below a family 

 but above the species. 



Seventh, the species, which ranks below a 

 genus and above the variety. 



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