INDEX. "^ 



Acer spioatuin, and Acer Pennsylvanicum, on the distribution of, in the Northern Page 



Peninsula of Michigan 127 



Adaption 41 , 42 



Aerating device , 33 



Agaricaceae 84 



Alexander 32 



Alma Channel, pre-glacial 141, 142 



Amblystoma punctatum 34 



American Bittern '. 168, 169 



American Coot. . . ; 168, 169, 170 



American Crow 168, 169, 170, 071 



American Goldfinch 169 



American Museum of Natural History, reference to 172, 173 



American Osprey 168, 169 



American Robin 168, 170 



American Woodcock 171 



Amelith Channel, pre-glacial 141 



Amherstburg quarries 177 



Ancyli 33 



Anderdon township 177 



Anticline, Silurian 177 



Antitoxin 39 



Antoine (Genesee) shales 179 



Area of Michigan 139 



Art Museum and Natural History Museum contrasted 173 



Asci and ascospores of Black Knot 74 



Ascomycetes 83 



Assistant Secretary Michigan Academy of Science 14 



Auburn pre-glacial channel 141 



Average elevation, bed rock, determination 140 



Average elevation, determination 139 



Bach, Ellen B 126 



Bacteria as factors in dissolving insoluble phosphates 160 



Barred Owl 170, 171 



Barrows, W. B 34 



Basidiomycetes .■ . . 83 



Bay-breasted Warbler 169 



Bay County, drift, average thickness. 140 



Bay County, physical geogi-aphy 138 



Bay County, pre-glacial topography 140 



Beal, W. J. 32 



Beaver channel 141 



Bed Rock, lower Michigan, average elevation 140 



Biologic forms on Racer 40 



Bird List 34 



Bittern, American 168, 169 



Belmore Beach, Essex County 184 



Blackbird, Red winged 167-171 



Blackbird, Rusty 170, 171 



Black-poll Warbler 169 



Black Duck 167, 170 



25 



