413 XEW JEESEY AGEI CULTURAL COLLEGE 



Inbred Corn. Albinos. Green. 



No. 1 13 47 



" 2 15 38 



" 3 7 48 



Wide-bred Corn. Green. 



No. 1 60 



" 2 65 



" 3 65 



There were seventy grains planted at four different times from each 

 of the six ears. Of the inbred corn over a quarter were albinos, while 

 none appeared among the two hundred seedlings of the wide-bred 

 grains. 



Plate VIII. shows the plants in one of the tests when two weeks, 

 old. Rows 2 and 3 are particularly poor, as shown in contract with 

 the plants in row 4. The albinos, although present, are not easily 

 seen in the engTaving. 



The number of tests in all the above-mentioned germinations is too 

 small to warrant any conclusion, but the results as a whole point 

 towards close fertilization as the cause. It would Idc well for all 

 growers of corn to detassel the plants from which the seed ears are 

 afterwards selected. 



ON THE BEHAVIOR OF MUTILATED SEEDLINGS.* 



The particular form of mutilation of seedlings here considered is 

 that of the removal of the plumule. Several kinds of plants have been 

 tested during the last twelve months in the deplumuling of the young 

 seedlings. The first of these was the garden radish, representing a 

 small, large-rooted and short-lived plant. Soon after the seedling was 

 above ground the puniule was removed upon alternate rows of plants, 

 while the other rows were left to grow normally. The first thing to 

 observe was the much deej^er green of the cotyledons of the deplu- 

 muled plants. This was followed by a remarkable elongation of the 

 petiole and the large size of the obcordate blade, the former attaining 

 a length of three inches and the latter a breadth of an inch and a half. 

 These cotyledons were raised at an angle of about 45°, and the very 

 dark-green blade had a thickness nearly double that of the normal 



*Abstract of a paper prepared for the fifth meeting of the Society for Plant Mor- 

 phology and Physiology, at Columbia University, January 1st, 1902, and published 

 without illustrations in Torrey's February, 1902. 



