. Bulletin of the Illinois State Laboratory of Natural History . . t ^ -c. —j— > i ^ it -- C „^^„^ _ 1 it it-- : 3> iS^E ^^ - — m ^H ;£:=t:_ ^=^ •a i ^ ^ ^= • 1—p ~i— ^ L i: c: »^ ^^ *=* 1 ^-^ t? ^■^ -5c ^ ^ it ^^ —1— ., Q^ :^ ^ • 41 2. ] ^-^ : z 6 , i| ^^ it .9 4 _1 r 1 ^ :^^ + 5 ,■ i ^ 5 ^^- S T (=: lu d^^ II i^^ 1 i =^ 3 § si ^ J = ±3 1 ? 1 —-■ 1^ ^--^^ it ^^ : . BiwrCi^e re. B ~ = S a> QC I^i6 ir>V K->cj ^O 1 /4i^ r u^ h^ r^— ■~ Tem^eraturej: g § s s a ? i^ 1^ Plankton Cmf ^ S S a s 3^^ ° 5|h- t — + - X rt \ , ^ r -> , Q_ 2 ^ f - ^ K ,^~t. ^ S i .. -X = S r .- T C ,, - ^

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. Bulletin of the Illinois State Laboratory of Natural History . . t ^ -c. —j— > i ^ it -- C „^^„^ _ 1 it it-- : 3> iS^E ^^ - — m ^H ;£:=t:_ ^=^ •a i ^ ^ ^= • 1—p ~i— ^ L i: c: »^ ^^ *=* 1 ^-^ t? ^■^ -5c ^ ^ it ^^ —1— ., Q^ :^ ^ • 41 2. ] ^-^ : z 6 , i| ^^ it .9 4 _1 r 1 ^ :^^ + 5 ,■ i ^ 5 ^^- S T (=: lu d^^ II i^^ 1 i =^ 3 § si ^ J = ±3 1 ? 1 —-■ 1^ ^--^^ it ^^ : . BiwrCi^e re. B ~ = S a> QC I^i6 ir>V K->cj ^O 1 /4i^ r u^ h^ r^— ■~ Tem^eraturej: g § s s a ? i^ 1^ Plankton Cmf ^ S S a s 3^^ ° 5|h- t — + - X rt \ , ^ r -> , Q_ 2 ^ f - ^ K ,^~t. ^ S i .. -X = S r .- T C ,, - ^ ^- -^ J — ——11—. B __>_—,^_ 1 ^ § J if^^i ,- 1 .1^ ^-. N f~ — 9 r ^ -a J t L. * -1 ^- — : \ c \ |_ ^^ G > r - ^ ^ ^ r^ 1 -~.^ ..... ...... ■^ ^ •v ~-- ^ i -1 1 , <to - ^^ - \ —«. ~^ .^^.....r. I

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Keywords: ., bookcentury1800, bookdecade1870, booksubjectnatural, bookyear1876