FURTHER OBSERVATIONS 



ON THE 



MOVEMENTS OF DIATOMS 



BY 



Jabez HOtiti, L. L. D., F. R. M. S., M. R. C. S., 



Hon. Fellow of the Belgium Microscopical Society, etc. 



^Mémoire présenté à la Société belge de Microscopie, à la séance du 



30 décembre 1882). 



Some few years before Schultze published his obser- 

 vations on the movements of Diatoms I had devoted at- 

 tention to the subject. In 1855 I contributed a brief 

 résumé of my investigations to the Quarlerly Journal of 

 Microscopical Science (London) *. 



The late Professor Smith stated that Diatoms werc 

 endowed with motive povver of some kind. He refers to 

 the subject in his Synopsis, Vol. 1, page XXIII, in the 

 following terms : « Although motion may be delected 

 in the frustules of attached species, as those of Gompho- 

 nema, when forcibly separated from their stipes, and in 

 which there is an ardent tendency to change their 

 position, I am constrained to believe that the 



' See : Quarterly Journal of Microscopical Science, p. 235. 1835. Also, 

 my work on the Microscope, 3 d Edition, p. 307, 1836. 



