134 



THE AMERICAN MIDLAND NATURALIST 



at bottom from station IV. 

 at surface from station V. 

 >4 D. to B. from station V. 

 at bottom from station V. 

 at surface from station VI. 

 >:( D. to B. from station VI. 

 at bottom from station VI. 

 at surface from station VII. 

 >< D. to B. from, station VII. 

 at bottom from, station VII. 

 at surface from station VIII. 

 X D. to B. from station VIII. 

 at bottom from station VIII. 

 at surface from station IX. 

 >4 D. to B. from station IX. 

 at bottom from station IX. 



A qualitative and quantitative microscopical analysis was 

 made of the contents of each vial. Three slides were made from 

 each sample and the kinds and quantity of forms noted. The 

 average number of each form on three slides was recorded as on 

 Chart II. 



6-29-16 



rt o 



m£ 



CHART II 



.2 B 

 Q2 



^ 0. « E 



I - -Sparse..... sparse... o 



II sparse sparse.... 6 



III abundant absent. ..20 



IVa abundant absent 2..." 2... 



IVb abundant present 12.... 8... 



IVc... sparse... present ...10 ... 6... 



Va Isparse......... present... 12... 5... 



Vb sparse abundant o... o... 



Vc sparse abundant 14... 8... 



Via sparse 1... .abundant 4. ... ,3... 



VIb abundant abundant 9 ... 7... 



Vic sparse sparse 18.... 9... 



Vlla sparse.... sparse o... i... 



Vllb sparse sparse 2.... o... 



VIIc ..absent ...abundant 5.... 2... 



Villa absent abundant o.... o... 



Vlllb... absent... sparse o ... o... 



VIIIc sparse present 7... 3... 



IXa absent sparse o... o... 



IXb absent sparse. 3... 6... 



IXc absent absent 12... 15... 



I.... 6... 

 3. ...23... 

 0....45... 

 2.... 9... 



c. 

 o... 



4- 



5... .17... 

 41 - 5- 



48. ...40. 

 2. .12. 



7 - 

 16. 

 8... 

 7- 

 5- 

 4... 

 2... 

 2... 

 7 - 



...I.. 

 . I... 

 - 3- 

 . 3 

 . 2... 

 . 4... 

 4... 

 .10 .. 

 ■ 3- 



>, a 



.38.. 



- 5 - 



■ 9 ■ 

 .24.. 

 .14.. 

 . 6.. 



■ 9- 

 4 



. I.. 



34- 

 .24.. 



- 9 ■ 



. 2.. 



- 3- 



.14. ...12.. 



■ 5 -- 3- 

 . 2.... 10. 

 o.. 



.11.. 

 .19.. 

 - 3- 

 . o.. 

 .14.. 

 .10.. 

 .18... 

 .16.. 



4.. 

 .12... 

 . 8... 



7... 

 . 6... 

 . I... 

 . 5... 



V 'fi rt 



g.H '^ 



j3 ca 

 W D- Q 



.J2....2. 



.. 0....0. 



.. 0....0. 



.. 3.... 7. 



.10. 

 .12. 



. 8. 



- 3- 

 . o. 



.12... 

 . o... 

 . 3... 

 . o... 



3- 

 . I... 



I. 



.0. 



. 6.... o. 

 .12.... 6. 



. 0....0.. 



. 6.... 2.. 



. 2....0.- 

 .14. ..3.. 



. 5....0.. 



. 2....0.. 



. 7.... I.. 



3....2.. 



. 0....0.. 

 . 2....0.. 

 . 3....1.. 



0....0.. 

 . 2....0.. 



5....1.. 



0....3. 



