BRIEFER ARTICLES 463 
dinflorescence of the Composite, a subject.which I have had under 
investigation for several years. The present paper treats only of the 
merical variation found in the ray-flowers of Helianthus annuus. 
ese particular studies were completed while I was connected with 
i a a se 
Ss Is rT ey 1 ry - “er 
Curve of variation. 
oma Agricultural and Mechanical College: 2 take See 
, edging my obligations to Mr. A ie — of that institution 
may judge from some recent utterances of F botanists and soul: 
is evident that the mathematical and statistical, study of varia- 
led to occupy a prominent part in the development of : < 
Tesearch. Dr. Robinson, in his address as retiring President | 
al Society of Anes said,“‘that nan the mies which ae 
