▁Black ▁Lake ▁on ▁the ▁line ▁of ▁Mus k eg on ▁and ▁Ott awa ▁count ies ▁and ▁coming ▁to ▁the ▁shore ▁of ▁Lake ▁Michigan ▁directly ▁west ▁of ▁the ▁north ▁end ▁of ▁the ▁lake . ▁There ▁is ▁probably ▁no ▁point ▁between ▁Holland ▁and ▁the ▁Grand ▁River ▁where ▁its ▁distance ▁from ▁the ▁present ▁shore ▁exceed s ▁, ▁and ▁throughout ▁much ▁of ▁the ▁distance ▁it ▁probably ▁does ▁not ▁exceed ▁. ▁ ▁Cor rel ations ▁to ▁other ▁gla cial ▁land sc apes ▁The ▁Tol eston ▁beach ▁may ▁have ▁been ▁only ▁partly ▁formed ▁by ▁Lake ▁Chicago . ▁It ▁has ▁a ▁level ▁that ▁was ▁closely ▁approxim ated ▁if ▁not ▁reached ▁by ▁Lake ▁Alg on quin . ▁The ▁occurrence ▁of ▁a ▁lake ▁at ▁this ▁level ▁in ▁Alg on quin ▁time ▁makes ▁this ▁beach ▁a ▁part ▁of ▁the ▁Alg on quin ▁beach ▁of ▁the ▁upper ▁Great ▁L akes ▁region . ▁The ▁Alg on quin ▁beach ▁car ries ▁in ▁a ▁few ▁places ▁m oll us can ▁shell s , ▁and ▁this ▁beach ▁of ▁Lake ▁Chicago ▁is ▁in ▁places ▁rich ly ▁supplied ▁with ▁these ▁shell s . ▁In ▁this ▁respect ▁it ▁contrast s ▁with ▁the ▁Cal um et ▁and ▁Glen wood ▁be aches , ▁from ▁which ▁m oll us can ▁remains ▁have ▁as ▁yet ▁been ▁reported ▁at ▁but ▁one ▁local ity , ▁near ▁Bow man ville , ▁north ▁of ▁Chicago . ▁Although ▁Lake ▁Alg on quin ▁did ▁have ▁two ▁out lets ▁( p ast ▁Chicago ▁and ▁Port ▁Hur on ), ▁sufficient ▁reason ▁for ▁its ▁later ▁complete ▁dis charge ▁by ▁Port ▁Hur on ▁is ▁found