140 PROCEEDINGS OF THE ACADEMY OF [1889. 



very salient and important features of this remarkable plant. This 

 should therefore be regarded as his apology for bringing a very 

 common organism to the notice of the Academy, and to the renewed 

 attention of the microscopists who take pleasure in studying it. It 

 is to be hoped that some one who is skilled in such work maybe in- 

 duced to take up the study of Volvox anew and publish a well- 

 executed drawing of a colony in which the facts here recorded are 

 adequately represented. This is all the more desirable in that, if 

 Volvox is really a plant, its psychological history should be as much 

 a matter of interest as its singular beauty and its intricate methods 

 of reproduction seem to have been. 



May 28. 

 Dr. W. S. W. Ruschenberger in the chair. 

 Eighty-three persons present. 



A paper entitled " A review of the American Species of Pria- 

 canthidse " by Willard L. Morrison. 



The following were elected members : — Emma Walter, Henry 

 Bentley, Henry C. Johnson, and William W. Meigs. 



George H. French of Carbondale, Ohio, was elected a correspond- 

 ent. 



The following were ordered to be printed : — 



