LABORATORY WORK 261 



cise is more practicable and more instructive 

 than appears from the description of it. 



1 6. If the student is doing specially thorough 

 work in systematic pomology, he should be 

 required to make a complete set of descrip- 

 tions of all varieties available, at least in one 

 or two classes of fruits. The aim in this case 

 is to make the set of descriptions complete as 

 well as accurate. Special effort should be 

 given to the extension of this collection. After 

 all available material is exhausted, vacancies 

 should be filled in by securing descriptions 

 of important but still missing varieties at 

 second hand. These may be copied to stand- 

 ard blank forms, edited and rearranged where 

 necessary, and put into the general list. They 

 should be arranged alphabetically, card catalog 

 fashion, as explained in Chapter II. 



1 7. Finally all students of systematic pomol- 

 ogy should make frequent visits to the or- 

 chards and gardens where the fruits are ripen- 

 ing. Here they should be tested as to their 

 knowledge of varieties, of names, and of mat- 

 ters of relationship brought out in classifica- 

 tion. Constant contact with fruit and fruit 

 trees in all situations and under all circum- 

 stances is the key-note to success in the study 



