when the staminal tube had once 'become tripped he found 

 that he could not straighten it to its original position 

 V7ithout causing a transverse fracture. 



Henslow also observed hive bees sucking the nectar 

 from the flowers of Medicago sativa. The flowers were 

 frequently visited by the bees but in no instance did he 

 find that they had power enough to set free the staminal 

 tube. ¥o opportunity of observing bumblebees presented 

 itself. 



Medicago Plowers Tripping Resume' 



(Botanische Zeitung jahrg. ,24 (1866) Von P. H. Hilde- 

 brand P 74) 



In an article published in 1866 Hildebrand discusses 

 the result of his studies of the flowers of Medicago and 

 other plants. 



He gives a description of alfalfa flowers in their 

 explosive arrangement. He quotes Triviranus ' statement 

 to the effect that flowers in Indigofera become tripped 

 naturally. Hildebrand states that flowers in species of 

 Medicago behave in the same way. 



According to a statement m-ade in 1894 by Burkhill, 

 Hildebrand asserted that the flowers of !i. sativa is 

 fertile if allowed to remain unexploded. 



( I.H. Burkhill Proceedings of the Cambridge Philosophical 

 Society for 1894 p. 142) 



(62) 



