194 LUTHER BURBANK 



tinct varieties of the plant and one of them is a 

 weed that grows along neglected roadsides in 

 California. Among any lot of wild teazels one 

 may find a number of types, and it is not un- 

 usually diffidult to fix these types by selective 

 breeding. 



If it were necessary or desirable for any par- 

 ticular use to make the hooks several times the 

 usual length, or the burs themselves several 

 times as large, this could easily be accomplished. 



My work had to do with some of the peculiar 

 forms rather by way of experiment than with 

 any practical idea. The forms worked with 

 were those with vertical rows of hooks, instead 

 of the spiral ones, and with varieties having 

 extra large hooks at the base and double heads, 

 The experiments were carried forward for sev- 

 eral years for my own information and education 

 and demonstrated that different kinds of teazel 

 burs could be developed and fixed if desired. 



Possibly some modified form of teazel may be 

 of use in a future industry. Hitherto it has not 

 been known that modified forms were available. 



My experiments with hemp were conducted 

 largely with an improved Chilean variety, but 

 included also the use of seed from Japan, India, 

 Russia and France, as well as from various parts 

 of the United States. The experiments have 



