Nuclear fission and atomic energy/

"Originated in a series of seminars ... held in the Physics Department of the University of Pennsylvania in the fall of 1945."

Fragments in philosophy and science,

Philosophy: its relation to life and education.--The idealism of Spinoza.--Recent discussion in materialism.--Professor Watson on reality and time.--The cosmic and the moral.--Psychology past and present.--The postulates of physiological psychology.--The origin of volition in childhood.--Imitation: a chapter in the natural history of consciousness.--The origin of emotional expression.--The perception of external reality.--Feeling, belief, and judgment.--Memory for square size.--The effect of size-contrast upon judgments of position in the retinal field.--An optical illusion.--New questions in mental chronometry.--Types of reaction.--The "type-theory" of reaction.--The psychology of religion.--Shorter philosophical papers.--Shorter literary papers.

Portfolio of fragments relative to the history and antiquities, topography and genealogies of the county palatine and duchy of Lancaster ...

"Substantially a reprint of the second edition of 1824."

Fragments of science.

Mode of access: Internet.

Moral discourses. Enchiridion and fragments.

Mode of access: Internet.

Fragments of Philo Judaeus /

Mode of access: Internet.