l894-] NEW-YORK MICROSCOPICAL SOCIETY, 29' 



Sociedad Cientifica "Antonio Alzate": Memorias, Vol. VII., Nos. 3 — 6- 

 (1893-94). 



L'Academie Royale Suedoise des Sciences de Stockholm: Memoires, Vol. 

 XVIII., Sections 3, 4 (1893). 



L'Academie d'Hippone, Bone: Bulletin (June, 1893). 



Correction. — It is due Mr. K. M. Cunningham to state that, in 

 his article, '* Notes on some Researches among the Diatomacese," 

 published in this Journal, vol. ix., p. 85, by the omission of cer- 

 tain matter contained in his manuscript he is caused to appear as 

 contradicting his own claim of making the first record of " the 

 motility of the protoplasmic covering of the Amphiprora." The 

 omission occurs on page 107, immediately preceding the sen- 

 tence, " One is certain of witnessing a phenomenon that has for 

 many years been of mysterious interest to observers." In this 

 sentence he refers to the cyclosis in NHella and similar organ- 

 isms, and not to " the activity of the protoplasmic sheath of the 

 Amphiprora ornata" of the preceding sentence, as published. — 

 Ed. 



