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Publies en facsimile avec transcription litterale, traduction francaise
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_Leonardo da Vinci's notebooks_; arranged and rendered into English by
E. McCurdy. 1906.

Leonardo de Vinci: _Notes et Dessins sur la Generation_. 1901.

Leonard de Vinci: _Feuillets inedits conserves a Windsor_. 22 vols.
1901 ff.

_Institute di Studi Vinciani:--Per il IVo centenario della morte di
Leonardo da Vinci_. 1919.

A. C. Klebs: _Leonardo da Vinci and his anatomical studies_. 1916.

Hieronymi Cardani: _Opera Omnia_. 1663. 10 vols.

W. W. R Ball: _A Short Account of the History of Mathematics_. 1901.

M. Cantor: _Vorlesungen ueber Geschichte der Mathematik_. Vol. 2
(1200-1668). 1900.

H. G. Zeuthen: _Geschichte der Mathematik in 16. und 17. Jahrhundert_.
1903.

Articles, "Algebra" and "Mathematics" in _Encyclopedia Britannica_.

Maximilien Marie: _Histoire des sciences mathematiques et physiques_,
vols. 2 and 3. 1883-4.

F. Cajori: _History of Mathematics_.[2] 1919.

David E. Smith: _Rara arithmetica_. A catalogue of the arithmetics
written before the year MDCI, with a description of those in the
library of G. A. Plimpton. 1908.

F. Dannemann: _Grundriss einer Geschichte der Naturwissenschaften_.[2].
2 vols. 1902.

W. A. Locy: _Biology and its makers_.[3] 1915.

W. A. Locy: _The Main Currents of Zooelogy_. 1918.

E. L. Greene: _Landmarks of Botanical History_. Part 1. 1909.
(Smithsonian Miscellaneous Collections, vol. 54).

J. V. Carus: _Geschichte der Zooelogie bis auf Joh. Mueller und Ch.
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F. Cajori: _A History of Physics in Its Elementary Branches_. 1899.

Conradi Gesneri: _Historiae Animalium_, libb. iii, 3 vols. 1551-8.

Wm. Gilbert . . . _on the Loadstone and Magnetic Bodies_ . . . a
translation by P. F. Mottelay. 1893.

E. Gerland: _Geschichte der Physik von den aeltesten Zeiten bis zum
Ausgange des achtzehnten Jahrhunderts_. 1913. (Work of high
philosophical and scientific value).

J. C. Brown: _A History of Chemistry from the Earliest Times Till the
Present Day_. 1913.

F. J. Moore: _A History of Chemistry_. 1918.

T. E. Thorpe: _A History of Chemistry_. 2 vols. 1909-10.

_Quaestiones Novae in Libellum de Sphaera Johannis de Sacro Bosco,
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S. Gu