294 
INDEX. 
M. Page 
MacCurdy, H. M 217 
McDougall, W. B 45 
Maps of the old distributaries of the St. Clair and Detroit Rivers, F. B. Taylor 142 
Membership list 9 
Mershon expedition to the Charity Islands, Lake Huron, amphibians and reptiles, Results of the. 156 
Minutes of the annual meeting 15 
N. 
Nattress, Thomas 109 
Newcomb, W. W 226 
Notes on the geology of the Gallina Quadrangle of New Mexico, E. C. Case 114 
Notes on Michigan Crustacea, 2. A new Michigan Asellus, A. S. Pearse 194 
Notes on Michigan birds, N. A. Wood 159 
Notes on Michigan mammals, N. A. Wood 63 
Notes on the Phyllopod Crustacea, A. S. Pears. e 194 
O. 
Officers for 1912-1913 7 
On certain relations of the flora and vertebrate fauna of Gratiot County, Michigan, with an ap- 
pended list of mammals and amphibians, H. M. MacCurdy 217 
On some amphibians and reptiles from the state of Vera Cruz, Mexico, Alexander G. Ruthven . . . 230 
On the Wisconsin wood-frog, Helen Thompson 189 
P. 
Pearse, A. S 191 
Phyllopod Crustacea, Notes on the 191 
Plant diseases of Michigan, G. H. Coons 232 
Plant breeding, W. E. Praeger 22 
Praeger, W. E 22 
Presidential address 22 
Progress of the geological and biological survey of Michigan, R. E. Allen 33 
Progress of the topographic work in Michigan 37 
R. 
Report of the chief field naturalist, Alexander G. Ruthven 42 
Report of the director of the Michigan geological and biological survey concerning the work of the 
year, R. C. Allen 33 
Report of the Librarian for 1911-1912 277 
Report of the Treasurer 18 
Results of the Mershon expedition to the Charity Islands, Lake Huron, amphibians and reptiles, 
Crystal Thompson and Helen Thompson 156 
Ruthven, Alexander G 42,165,230 
Ryder, Edward H 150 
S. 
Scientific management and the wage earner, Frank T. Carlton 143 
Sink, Emory 212 
Some bird and mammal records for Michigan, N. A. Wood 159 
Some considerations concerning the place and the origin of lava reservoirs, William H. Hobbs ... 107 
Some interesting changes in the optical properties of crystals with temperature, E. H. Kraus and 
L. J. Youngs 108 
T. 
Table of contents 5 
Taylor, F. B 142 
The age of the Keweenawan series, A. C. Lane 107 
The breeding birds of the Charity Islands, Lake Huron, with additional notes on the migrants, N. 
A. Wood 178 
The mouth reflex of Physa, may it be substituted for the salivary reflex of Pawlow in studies of 
the nervous system of snails? Elizabeth Thompson 206 
