MICHIGAN ACADEMY OF SCIENCE. 
19 
COMPLETE LIST OF PAPERS AND ADDRESSES PRESENTED 
AT THE EIGHTEENTH ANNUAL MEETING OF THE 
MICHIGAN ACADEMY OF SCIENCE. 
1. 
3. 
4. 
0 . 
7 . 
8 . 
9. 
10 . 
101 
11 . 
12 . 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20 . 
21 . 
oo 
Presidental Address: Plant Breeding, W. E. Praeger. 
A brief report from the director of the Geological and Biological 
Survey of Michigan concerning the work of the Survey for 
the year. R. C. Allen. 
Report of the Chief State Naturalist, A. G. Rnthven. 
A Symposium upon Recent Views Concerning the Nature of the 
Earth's Interior. 
The View of an Astronomer, W. J. Hussey. 
The View of a Physicist, A. A. Miclielson. 
The View of a Geologist, Wm. H. Hobbs. 
Public Address: Iridescent Colors of Birds and Insects. A. A. 
Miclielson. 
Unreported Michigan Fungi for 1911, C. II. Kauffman. 
Preliminary List of Michigan Mosses, G. H. Kauffman. 
An Optimum Culture Medium for a Fungus, J. P». Pollock and 
Rose M. Taylor,. 
A Working Key to the Species of Solidago Occurring in Mich- 
igan, Chas. H. Otis. 
A “Clearing House” for Reports on Fungus Distribution, E. A. 
Bessev. 
Demonstrations of Endotrophic and Ectotrophic Mycorhiza, W. 
B. McDougal. 
Behavior of Main and Lateral Stems When Displaced from their 
Normal Position, F. C. Newcombe. 
Indications of Induced Apogamy in Onoclea Struthiopteris. Eliza- 
beth D. Wuist and C. H. Kauffman. 
The Measurement of Tree growth, C. L. Hill. 
The Use of the Quadrat Method in Ecological Field Work, H. 
A. Gleason. 
Plant Succession on Lumbered Districts, Fred A. Loew. 
An Aspen Association in Northern Michigan, B. E. Quick. 
The Successional Relationships of the Plant Associations of the 
Douglas Lake Region, F. C. Gates. 
Some Studies. on the Structure of Hydrophytic Leaves. Geo. L 
Keenan. 
The Plant Diseases of Michigan, G. 11. Coons. 
The Anthropography of North America, M. S. W. Jefferson. 
Some Considerations Concerning the Place and the Origin of 
Lava Reservoirs, Wm. II. Hobbs. 
Recent Data Relating to the Structure of the Pre-Cambrian West 
of the Iron River District, Michigan. R. Allen. 
The Age of the Keweenawan Series. A. ('. Lane. 
Some Interesting Changes in the Optical Properties of Crystals 
with Temperature, E. H. Kraus and L. J. Youngs. 
