39 



dexed for use. A photoengraving of one of these pages, exact size, is 

 here reproduced (Fig. 0): 



i»</ flu/' n-K-ale-riAl %-K/rf(uJ Ui^etis.'xaS^ajE Ufu "V PMuti> 



tvi uLativ c^ fxZavti ifttO.'^ i^lur-^ Cjci^'^ _V a /itu r<A^J 

 /n ■ W,n-ta4»oJMM/«a.S'/' 



Fig. 6. 



By the time tlie numbers of his plates had assumed some importance 

 a set of larger note books had been prepared, into which he recopied 

 the data above mentioned, together with notes of his own observations, 

 besides references to figure and plate of his own work. These were 

 prepared for each of the principal orders ; and for two or thre?, as the 

 Lepidoptera, Coleoptera, and Diptera, an additional series in which the 

 food plants were alphabetically arranged, with a list of the species of 

 insects frequenting or destroying them following each plant named. In 

 time, as the number of plates increased, as his observatious became 

 more extended, and entomological publications had become more numer- 

 ous ; and as the old books were bursting their covers, a set of letter- 

 size blank books were obtained, and the entire masa of notes recopied 

 on afar more exhaustive plan, the whole finally constituting the material 

 of the text which would accompany the plates when published. 



This was evolution pure and simple, for I have always considered 

 that the text of Professor Glover's work was the direct outgrowth of 



