Medicago Flowers Tripping Historical Resume' 

 De Candolle : Pflanzen-Physiologie : p. 116 Aus dem Pranz- 

 sisohen uljersetzt von Johannes Roper, 1835, p. 116-111. 

 Buch . Par . 6 . 



In this translation into the Gerinan language Roper 

 gives the same statement in regard to the tripping mechan- 

 ism in Medicago that deCondolle originally stated in his 

 original book on The Physiology of Plants written in 

 French and published in 1832. 



Medicago Flowers Tripping Historical Resume' 

 Journal of the Linnean Society of London 1867 p. 328 

 Rev, Geo. Henslow. 



In a paper read at a meeting of the Linnean Society 

 in Nov. 1865 Henslow discussed the results of his obser- 

 vations and experiments with flowers of alfalfa and other 

 plant s . 



Henslow was the first, according to sl-yij available 

 record, who studied carefully the explosive mechanism, of 

 alfalfa flowers and attem.pted to explain its cause. He 

 attributed the elasticity of the staminal column to the 

 turgidity of the cells of the nine cohering filiments of 

 the stamina! tube. He found that the tenth or free stay- 

 men appeared to have no such elastic property. When the 

 pistil was removed from the tube it exhibited no elastic- 



incy to become curved. On the other hand 

 (61) 



