Aquatic ILiit 



125 



tition between the various organisms is 

 so keen and the cycle is so rapid that even 

 daily observations are hardly sufficient to 

 study the factors involved ; though now 

 and then some prominent case of compe- 

 tition, such as between Paramecium and 

 Didinium is forced upon the attention and 

 the reason for the extinction of one form 

 is clear ! The premature elimination of 

 Paramecium obviously may disturb there- 



hay infusion microcosm becomes the "in- 

 fusoria tank," the source of food for 

 newly hatched fishes.— £af.) 



The South Side Aquarium Club was 

 organized on March 16th, at a meeting 

 called for the purpose at the home of the 

 writer, 671 1 Parnell avenue. Fifteen 

 aquarists were present, the following offi- 

 cers were elected for the initial year : 



Didinium Paramecium Vorticella Amoeba 



Photograph of Vorticella by Philip O. Gravelle; others at Yale University 



after the "normal" cycle of such infusion. 



But enough has been said to indicate 

 the possibilities which hay infusions offer 

 for becoming acquainted with many of 

 the fresh water Protozoa. And by be- 

 coming acquainted, I do not mean learn- 

 ing their names, but rather, getting an 

 inside glance, as it were, at the daily life 

 and strife in the "world of the infinitely 

 little" — a world beyond the ken of un- 

 aided vision but within that of any one 

 with a compound microscope at his dis- 

 posal. — By permission, with courtesy of 

 illustration, from The Guide to Nature, 

 organ of the Agassiz Association. 



(In the language of the aquarian the 



President, M. Stubbs ; secretary and 

 treasurer, A. A. Maima ; importation 

 committee, Carson, Zemke and Maina. 

 Aquatic Life becomes the official organ 

 of the club. Meetings will be held regu- 

 larly on the first Thursday of each month. 

 The secretary will be glad to furnish in- 

 formation to aquarists desiring to become 

 affiliated. — A. A. Maina, Secretary. 



You wouldn't know many a fellow was 

 making an ass of himself if he didn't 

 bray so much about it. Likewise many 

 a fellow would be credited with knowing 

 a lot more about fishes if he didn't talk 

 so much on "meetin' night." 



