[To] explain the phenomena of the mineral kingdom ... systems are usually reduced to two classes, according as they refer to the origin of terrestrial bodies to FIRE or to WATER; and ... their followers have of late been distinguished… — John Playfair Copy Share Image
To trace the series of these revolutions, to explain their causes, and thus to connect together all the indications of change that are found in the mineral kingdom, is the proper object of a THEORY OF THE EARTH. — John Playfair Copy Share Image
The Author of nature has not given laws to the universe, which, like the institutions of men, carry in themselves the elements of their… — John Playfair Copy Share Image
“The ridge of the Lammer-muir hills... consists of primary micaceous schistus, and extends from St Abb's head westward... The sea-coast affords a transverse section… — John Playfair Copy Share Image
[To] explain the phenomena of the mineral kingdom ... systems are usually reduced to two classes, according as they refer to the origin of… — John Playfair Copy Share Image
Every river appears to consist of a main trunk, fed from a variety of branches, each running in a valley proportional to its size,… — John Playfair Copy Share Image
Thus we conclude, that the strata both primary and secondary, both those of ancient and those of more recent origin, have had their materials… — John Playfair Copy Share Image
To trace the series of these revolutions, to explain their causes, and thus to connect together all the indications of change that are found… — John Playfair Copy Share Image
Amid all the revolutions of the globe, the economy of Nature has been uniform, ... and her laws are the only things that have… — John Playfair Copy Share Image
![“[To] explain the phenomena of the mineral kingdom ... systems are usually reduced to two classes, according as they refer to the origin of terrestrial bodies to FIRE or to WATER; and ... their followers have of late been distinguished by the fanciful names of Vulcanists and Neptunists. To the…” quote by John Playfair](https://sms4smile.com/quotes/img-quotes/081/john-playfair-46821_agency_to-explain-the-phenomena-of-the-mineral_707668.jpg)
