ELEMENTARY BIOLOGY. 



INTRODUCTION. 



Page 84, line 24, for spherical read oblong 



100 ,, 4f>for what is known as read an imperfect 

 174 7 from bottom, <w* like the lily 



appear late in the history of science, and, of necessity, their 

 advent is preceded by a period during which the efforts of 

 scientific workers are, consciously or unconsciously, directed 

 chiefly to the accumulation of stores of information on 

 matters of fact. Moreover, not only have those observations 

 already made to be revised, corrected, and extended, but 

 they require to be directly verified and amplified by ex- 

 periment before the generalisations or inductions formed 

 from their study can be said to be perfectly legitimate and 

 trustworthy. Observations previously isolated become aggre- 

 gated round these generalisations as centres, each generali- 

 sation being known as a natural law. 



The relationships discovered to exist between individual 

 phenomena were soon found to be capable of wide exten- 

 sion ; for the various natural laws which expressed these 







