156 
PROCEEDINGS OF THE NATURAL [April, ’88. 
the county from Ozaukee County in the north-east and flow¬ 
ing parallel to the la£e shore meets the Menomonee River in 
about the middle of the eastern part of the county. The 
Menomonee flows eastward through the western part of the 
county before uniting with the Milwaukee River. The two 
rivers are joined where they fall into Lake Michigan by the 
Kinnikinnick River which comes from the south, flowing 
parallel to the lake shore except in the southern part of the 
county, where its trend is eastward. Of the smaller streams 
may be mentioned Oak Creek, which waters the south-eastern 
corner of the county, flowing into Lake Michigan at Oak 
Creek Post Office, and Root River, which enters Racine 
County after flowing through the south-western portion of 
Milwaukee County. Small tributaries to the above mentioned 
streams are, of course, abundant everywhere. Ponds and 
marshes are common, the latter being mostly confined to the 
lowlands about the mouths of the rivers. 
The mean annual temperature is about 47 o p. In sum¬ 
mer t e temperature sometimes rises to 100 0 F. and in winter 
! ° CCaS '° nally falls t0 2 5 0 F. The spring is characterized 
y muc cold, rainy and changeable weather. The growth 
I;— - “ thC WCStern P art of the county is 
sometimes fully two weeks 
the Lake bluffs ' advan “ °f the vegetal,on on 
rail 'nr” 8 ' a " nUaI rai " fa “ is about 3 °* inches. Most 
th ee , m °" a " aV "? e ‘ " JUne ' the '«*» Feb,nary. The 
ra n ,h,7' r m °" thS "" a " average with tnost 
rain, the three winter months with least • fll . 
are somewhat more rainy than the ? m 
that the average rain fjs. ^ h Umn months. It seems 
parts of the state. * ^ M,Iwau kee than in other 
■ f h ; 
,he -.ion are 
