Page 

 IX. Downstream movement of recently- transformed adults, ,. o.o .l5ii 



rl6T>nOQS ox S uUCiy^ o«»«eo«no«»o09oei»o»o«o«oooeo0o«c>oooo«ff X^ti 



(1) The Ocqueoc River weir and trap for newly- 

 x<r3.n.sx oriuGci X3Jn.p3?sys oooooo ©o o o« ooo«o ooooooooooXp^ 



(2) The Carp Lake River dam and inclined-screen- 

 trap for newly metamorphosed sea lampreys. o.. .156 



Time limits and character of the downstream movement 



and factors affecting this migration. .o .o.. . oo« ..o.. .o. ol53 

 Length composition of downstream runs, and weight of 



Observations on habits and behavior, . ... ,,o .....,,.,.. . , ,l66 

 Downstream movement of partially-transformed sea. lampreys 

 and of other species of lampreys and fishes... . ,» b,«,,<,»16?' 



X. Investigation of the adult, parasitic phase of the sea 



X^riipir6ji' S XXX 6 Cj^CXo •ooeoe9ooeooo»eooe»ooeoeeo9o«ooou90oo XOO 

 iyi6'CnOQS ox ? UIXQ^ a*ec'0eo900dooo«o*ooo»«ooo*oo9oooooooo « XOO 



Distribution in Lake Huron and its northern 



Growth of parasitic sea lampreys and estimated length 



OX pdJ/3'SX OXC XXX6coo*»9ooeo«««*e«oo««o«« •• •a»ee«*»eooXfX 

 ■A.X e ±j2.u QxoAj \XxQ Co-uGClooo oo •eoonoa oe * o o oo*e o ooooo 900 eooeooooscv-^fj? 



XII, Appendices 



111 



