TABLE OF CONTENTS. 
Letter of Transmittal.. 
Constitution of the Michigan Academy of Science. 
By-Laws of the Michigan Academy of Science. 
Officers of the Michigan Academy of Science. 
Membership of the Michigan Academy of Science. 
Secretary-Treasurer’s Report. 
List of Papers Presented at the Twelfth Annual Meeting 
Page. 
iii 
1 
3 
5 
6 
9 
10 
Papers Published in the Report: 
President’s Address, Fact and Fancy in Bird Migration, by W. B. Barrows. .... ..■••• 
Unreported Michigan Fungi from Petqskey, Detroit and Ann Arbor for 1905, by C. 11. 
Kauffman. 
A study of Rudbeckia hirta L., by W. J. Beal. 
A Stimulus to the Production of Cellulose and Starch, by J. B. Dandeno. 
A Fungus 1 iseasc of Greenhouse Lettuce, by .T. B. Dandeno. 
The Aerating Systems in Plant Tissues, by J. B. Dandeno. 
Plant Distribution at Mud Lake, by L. H. Pennington.■ • _■ ' 
Some Botanical Errors found in Agricultural and Botanical Text-books, by W. . . ea 
Some Notes on Nodules, by C. D. Smith.. ••.at 
The Proteid Content of Wheat as an Index to its Bread Making Qualities, by A. J. 
Patten. * *' .. 
Rainfall of the Lake Country for the Last 25 Years, by Mark S. W. Jefferson. 
Raised Beaches in Eastern Wisconsin, by James W. Goldthwait (Abstract). 
Symposium on Water Supplies in Michigan, pages./ • •; • • ■ '/ ' ;., ' 
Geological Conditions of Municipal and Institutional Water Supplies in Michigan, by 
Frank Leverett.. • ;. 
Shall Pollution of Michigan Streams be Permitted? by M. O. Leighton. 
Purification of Municipal Water Supplies, by G. S. Williams. 
Ideals Concerning Municipal Water Supplies, by Israel C. Russell. 
Isolation as a Preventive Measure, by Guy L. Keifer.. • .. 
Meat Inspection as an Aid to the Prevention of Disease, by E. H. Hayward. 
The Flagellum Staining of Spirochaeta obermeiri, by Clough Turrill Burnett.. .. 
The Association of Pseudomonas radicicola with Bacillus ramosus, by W. G. Sackett .. 
Twenty-five Years"of Bird Migration at Ann Arbor, Mich., by Norman A. Wood. 
Notes of the Birds of the Michigan Forest Reserve, by Earl H. Frothingham. 
A Study of the Birds of the Overflow East of Ann Arbor, Mich., by R. A. Brown. 
Notes on the Fish of Hillsdale County, Michigan, by T. L. Hankinson. 
Laboratory Work and Its Relation to Field Work. (Abstract), by J. G. Needham . • • • • 
Laboratory Work in Biology, Its Nature, Conduct and Value. (Abstract), by Louis 
Murbach . 
13 
26 
38 
40 
45 
48 
54 
64 
67 
75 
78 
98 
to 136 
99 
119 
122 
128 
137 
141 
145 
147 
151 
157 
162 
175 
179 
180 
183 
Index 
