INDEX. 
187 
Page 
Hillsdale county, Michigan, fish of . 175 
History of Michigan Academy of Science. 1 
Hygienic laboratory . Ill 
Increased rain on heights..... 85 
Independence Lake . 54 
Inflamable gas in underground water ... 103 
Inland lake water supply . 99 
Institutional water supply . 106-110 
Iron in underground water ... 102 
Isolation as preventive measure . 137 
Ithaca, N. Y. 120 
Kaufman, C. H., paper by. 26 
Kiefer, G. L., paper by .. 137 
Laboratory work and field work.. 179 
Laboratory work in high school biology . 179 
Lane, A. C., remarks by ..... 127 
Leighton, M. O., paper by . 119-121 
Leverett, Prank, paper by . 99-110 
Librarian of Michigan Academy of Science. 5 
List of birds, Michigan forest reserve . 158 
Marquette water supply . 101 
Marshes, birds found in . 167 
Marsonia perforans . 45 
Meat inspection . 141 
Mechanical filters . 125-127 
Membership of the Michigan Academy of Science. 6 
Migration of birds . 13-25 
Migration of birds at Ann Arbor . 151 
by day . 18,19 
by night . 18,19 
Mud Lake, plant distribution at . 54 
Municipal ownership of water works . 105 
Municipal water supply .. 106-110 
Municipal water supplies, perfection of .. 122 
Murbach, Louis, paper by. 180 
Needham, J. G., abstract by . 179 
New Haven, Conn. 120 
Notes on the birds of the Michigan Forest Reserve. 157 
Nighthawk, migration of . 16 
Nocturnal migration of birds . 18 
Nodules . 67 
Nodule-forming bacteria . 147 
Nodules on the roots of legumes . 67 
Officers of the Michigan Academy of Science . 5 
Oil in underground water . 103 
Open fields, birds found in .... 165 
Open woods, birds found in . 164 
Orchards, birds found in . 164 
Overflow, birds of . 162 
Papers presented at the twelfth annual meeting. 10 
Passenger pigeon, fluctuations in numbers of . 22 
Patten, A. J., paper by. 75 
Peat bog . 54 
Pennington, L. H., paper by . 54 
