Trans. Wis. Acad., Vol. XI. 



Plate XL1I. 



Depth, 

 m.. 



20 40 60 80 100 120 140 160 180 200 220 Nauplii. 

 10 20 30 40 50 60 70 80 90 100 110 Crustacea. 



02m 



51m 



...10 m 



14° /S° S&° J 7° S<3° JS°1 2Q° 21° 22 * 



/2° /<2° 











































































































































...15 m 



,..20 m 



Fig. 33. — Vertical distribution of Crustacea, nauplii, and temperature, Sept. 8, 1896, 

 noon. Scale, Crustacea (full line), 1 horizontal space = 10,000 per cu. m.; nauplii, 

 1 space = 20,000; temperature, 1 space = 1 degree. See p. 413. 



