Proctor, Richard A.

The Sun: Ruler, Fire, Light, And Life Of The Planetary System

Rough Ways Made Smooth

Light Science For Leisure Hours

Pleasant Ways In Science

Light Science For Leisure Hours

Easy Lesson In The Differential Calculus

Light Science For Leisure Hours

Die Kraft Der Himmelszeichen

Strength And Happiness

The Great Pyramid

The Expanse Of Heaven:

Wages And Wants Of Science Work

Other Worlds Than Ours

Half-Hours With The Stars

Myths And Marvels Of Astronomy

Half-Hours With The Stars A Plain And Easy Guide To The Knowledge Of The Constellations

Flowers Of The Sky

A Star Atlas For The Library, The School And The Observatory...

A Star Atlas For The Library, The School And The Observatory...

Our Place Among Infinities. A Series Of Essays Contrasting Our Little Abode In Space And Time With T

Our Place Among Infinities. A Series Of Essays Contrasting Our Little Abode In Space And Time With T

Myths And Marvels Of Astronomy

Myths And Marvels Of Astronomy

Light Science For Leisure Hours

Flowers Of The Sky

Light Science For Leisure Hours

Flowers Of The Sky

Chance And Luck

A History Of Painting In Italy, Umbria, Florence And Siena, From The Second To The Sixteenth Century; Volume 2

The Orbs Around Us: A Series Of Familiar Essays On The Moon And Planets

A New Star Atlas For The Library, The School, And The Observatory In Twelve Circular Maps

Myths And Marvels Of Astronomy

Transits Of Venus: A Popular Account Of Past And Coming Transits From The First Observed By Horrocks A.D. 1639 To The Transit Of A.D. 201

A History Of Painting In Italy, Umbria, Florence And Siena, From The Second To The Sixteenth Century; Volume 2

A New Star Atlas For The Library, The School, And The Observatory In Twelve Circular Maps

Transits Of Venus: A Popular Account Of Past And Coming Transits From The First Observed By Horrocks A.D. 1639 To The Transit Of A.D. 201

Light Science For Leisure Hours

Great-Circle Sailing: Indicating The Shortest Sea-Routes And Describing Maps For Finding Them In A Few Seconds

Essays On Astronomy: A Series Of Papers On Planets And Meteors, The Sun And Sun-Surrounding Space, Stars And Star Cloudlets; And A Disserta

Chance And Luck

The Moon: Her Motions, Aspect, Scenery, And Physical Condition. By Richard A. Proctor. With Three Lunar Photographs By Rutherfur

Half-Hours With The Telescope; Being A Popular Guide To The Use Of The Telescope As A Means Of Amusement And Instruction.

A Treatise On The Cycloid And All Forms Of Cycloidal Curves And On The Use Of Such Curves In Dealing With The Motions Of Planets, Comets, &c. And Of Matter Projected From The Sun

A Star Atlas

Easy Lesson In The Differential Calculus