Trans. Wis. Acad., Vol. XI. 
Plate XL1I. 
20 40 60 80 100 120 140 160 180 200 220 Nauplii. 
Depth. 10 20 30 40 50 60 70 80 90 100 110 Crustacea. 
1 space = 20,000; temperature, 1 space = 1 degree. See p. 413. 
