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                               DECEMBER,
                 Volume XVI.       1915      Number 2.


                                The Ohio

                           Journal of Science

                 (Continuation of The Ohio Naturalist)

                         Official Organ of the

                OHIO STATE UNIVERSITY SCIENTIFIC SOCIETY

                               and of the

                        OHIO ACADEMY OF SCIENCE

                             COLUMBUS, OHIO

     Annual Subscription Price, $2.00      Single Number, 30 Cents

 Entered at the Post-Office at Columbus, Ohio, as Second-Class Matter.




                      THE OHIO JOURNAL OF SCIENCE

                            PUBLISHED BY THE

                Ohio State University Scientific Society

                Issued Monthly during the Academic Year,
                 from November to June (eight numbers).

             OFFICIAL ORGAN OF THE OHIO ACADEMY OF SCIENCE

        Subscription Price: $2.00 per Year, payable in advance;
                      to Foreign Countries, $2.50.
                        Single Copies, 30 Cents.

                Editor,                JOHN H. SCHAFFNER
                Associate Editor,          JAMES S. HINE
                Associate Editor,      FREDERICK W. IVES


                         EDITORIAL BOARD

           J. F. LYMAN            Agricultural Chemistry
           F. W. IVES           Agricultural Engineering
           A. G. MCCALL                         Agronomy
           F. L. LANDACRE                        Anatomy
           J. H. SCHAFFNER                        Botany
           CARL B. HARROP            Ceramic Engineering
           JAS. R. WITHROW                     Chemistry
           F. H. ENO                   Civil Engineering
           MINNA C. DENTON                Home Economics
           N. W. SCHERER                        Forestry
           C. S. PROSSER                         Geology
           V. H. DAVIS                      Horticulture
           W. A. KNIGHT                  Industrial Arts
           C. J. WEST                        Mathematics
           HORACE JUDD            Mechanical Engineering
           JONATHAN FORMAN                     Pathology
           F. C. BLAKE                           Physics
           R. J. SEYMOUR            Physiology (General)
           CLAYTON MCPEEK           Physiology (Medical)
           E. R. HAYHURST     Public Health & Sanitation
           J. S. HINE             Zoology and Entomology

THE OHIO JOURNAL OF SCIENCE is owned and controlled by the Ohio State
University Scientific Society. By a special arrangement with the Ohio
Academy of Science, the OHIO JOURNAL OF SCIENCE is sent without
additional expense to all members of the Academy who are not in arrears
for annual dues.

The first fifteen volumes of the old OHIO NATURALIST may be obtained at
$1.00 per volume.

Remittances of all kinds should be made payable to the Business Manager,
J. S. HINE.

       Address The Ohio Journal of Science Ohio State University,
                                Columbus

              =Ohio Academy of Science Publications.=

   First and Second Annual Reports                 Price 30 cts. each
   Third and Fourth Annual Reports                 Price 25 cts. each
   Fifth to Sixteenth Annual Reports               Price 20 cts. each
   Seventeenth to Twenty-fourth Annual Report      Price 40 cts. each


                            SPECIAL PAPERS.

   1. Sandusky Flora. pp. 167. E. L. MOSELEY                     60 cts.
   2. The Odonata of Ohio. pp. 110. DAVID S. KELLICOTT           60 cts.
   3. The Preglacial Drainage of Ohio. pp. 76. W. G. TIGHT,
          J. A. BOWNOCKER, J. H. TODD and GERARD FOWKE           50 cts.
   4. The Fishes of Ohio. pp. 105. RAYMOND C. OSBURN             60 cts.
   5. Tabanidæ of Ohio. pp. 63. JAMES S. HINE                    50 cts.
   6. The Birds of Ohio. pp. 241. LYNDS JONES                    75 cts.
   7. Ecological Study of Big Spring Prairie. pp. 96.
          THOMAS A. BONSER                                       50 cts.
   8. The Coccidæ of Ohio, i. pp. 66. JAMES G. SANDERS           50 cts.
   9. Batrachians and Reptiles of Ohio. pp. 54. MAX MORSE        50 cts.
  10. Ecological Study of Brush Lake. pp. 20. J. H. SCHAFFNER,
          OTTO E. JENN