224 THE AMERICAN MIDLAND NATURALIST. 
also interesting. Spores of Conocephalum conicum, in some 
stage of development, from the tetraspore stage to the multi- 
cellular sporelings, are available any time between the first of 
September and the latter part of April. The opportunity for 
collecting spores is reduced in Preissia commutata to less than 
a month in any season, and this period, though more variable, 
is probably not much longer in Marchantia polymorpha. 
Rosary College, 
River Forest, Illinois. 
Birds in the Vicinity of Rosary College, River Forest, Illinois. 
ROSE E. KERBER. 
River Forest is located about ten miles west of Chicago on 
the Des Plaines River. Situated as it is, in the midst of the 
expansive Forest Preserves of Cook County, bird life is abun- 
dant. The birds here noted were observed between October 
fifteenth and June fifteenth. The list, by no means, includes 
all of the species which may be found in this vicinity, for those 
named were seen on weekly botany excursions of a few hours 
each and were more or less casual observations, as the writer’s 
chief attention on these field trips was directed to the study of 
plants. The birds listed below, with few exceptions, seemed 
to be very common. This is especially true of the ring-necked 
pheasants, of which as many as thirty were seen at one time 
in an old corn field adjacent to the college campus. 
The list is as follows: 
Order Passeres: 
1.—Turdus mustelinus—Wood Thrush. 
First observation was April 14. This bird was seen on 
almost every trip thereafter. 
2.—Merula migratoria—American Robin. 
Very common after the latter part of March. Few were 
observed before March 23, and were never seen in groups. * 
