2. Constructive Theory of the Unicursal Plane Quartic by Synthetic Methods, by Annie Dale Biddle. Pp. 27-54, 31 text-figures. September, 1912 .50

3. A Discussion by Synthetic Methods of Two Projective Pencils of Conics, by Baldwin Munger Woods. Pp. 55-85. February, 1913 .50

4. A Complete Set of Postulates for the Logic of Classes Expressed in Terms of the Operation “Exception”, and a Proof of the Independence of a Set of Postulates due to Del Ré, by B. A. Bernstein. Pp. 87-96. May, 1914 .10

5. On a Tabulation of Reduced Binary Quadratic Forms of a Negative Determinant, by Harry N. Wright. Pp. 97-114. June, 1914 .20

6. The Abelian Equations of the Tenth Degree Irreducible in a Given Domain of Rationality, by Charles G. P. Kuschke. Pp. 115-162. June, 1914 .50

7. Abridged Tables of Hyperbolic Functions, by F. E. Pernot. Pp. 163-169. February, 1915 .10

8. A List of Oughtred’s Mathematical Symbols, with Historical Notes, by Florian Cajori. Pp. 171-186. February, 1920 .25

9. On the History of Gunter’s Scale and the Slide Rule during the Seventeenth Century, by Florian Cajori. Pp. 187-209. February, 1920 .35

10. On a Birational Transformation Connected with a Pencil of Cubics, by Arthur Robinson Williams. Pp. 211-222. February, 1920 .15

11. Classification of Involutory Cubic Space Transformations, by Frank Ray Morris. Pp. 223-240. February, 1920 .25