ECOLOGICAL SUCCESSION. 25 



Sch i U>eodes gyrin us . 



( ' mimon in dense vegetation of the shallow, almost stagnant 

 \\ater of bays. 



I lide-, under stones and logs (Ha> . '141. 

 Esox irnuifnlatus. 



Situations with most aquatic vegetation (Jordan and Kver- 

 inaii. 'oj . 



I'ret. nnce for quiet muddy \\ater: weedy streams Forbe- 

 and l\i< hard son, *o8). 



Grassy -treamsand muddy bayou- Hen-hall. '03 

 I 'nilini linii. 



Mevei seen swimming in the open water; onl\ \\here.iquatie 

 plain- lornit-d a dense growth in -hallou u.itt r 1 l.mkiu-on, 

 '07). 



liiir\ them-elves in a hole in tin- mud -cooped out \\iili the 

 lail: rest there at an angle of 45 with tin- tail <lo\\n and the 

 lie-ad b.tivK |n)iruding (Abbott, '; 



Mr. l>\\igln L. Gardner has shown by experimental -mdie- 

 in our laboratory that they avoid -iron- li-ln. 



.'fiicas. 



1 "111111011 iii all places where tln-n- an- mam \\ait-r plant- 

 I laiikiii-on, '07). 



Muddii-i and apparently most nninxitin^ hole- ll.i\. '<ij . 

 .1 niciitrii* nuttilis. 



'.Mici.ilK t"re(|iieiiting the pond \\n-d /on.- from \\lii.h it 

 \\t-ni into -h.illou w.iter at night. Yonn^ in -hallou \\ait-r 

 \\iili d-n-- \< Delation (Hankin-on, <; 



Streams \\ith mudd\' bottom I itrbc- and Kirli.ird-oii. '. 

 Anicitf 'tis. 



^mall |ioud- \\ith muck bottom Jordan and K\ crnian. 'O2 . 

 A. comparison of the data abo\ \\ ith that in Table I .. p. J, and 

 Table XXI . p. 17, shows that the lar-c mouthed black ba--. tin- 

 blue uill. tin- \\armouth, the perch and tin- \ello\\ .md -potted 

 bullhead- are not in water of the depth which tln-\ pn-l't-r in other 

 lo ( .ilitii--. Tin- other ti-he- are belter loe.ued a- to the depth of 

 the ualei. 



The lar^e mouthed black ba , the blue gill, the perch, and the 

 -jiotted and yellow bullhead- are found chiclly in the pond \\eed 



