An essay on salt : containing notices of its origin, formation, geological position and principal localities, embracing a particular description of the American salines : with a view of its uses in the arts, manufactures and agriculture : delivered as a lecture before the New-York Lyceum of Natural History / by Jer. Van Rensselaer.

  • Van Rensselaer, Jeremiah, 1793-1871.
Date:
1823
Catalogue details

Licence: Public Domain Mark

Credit: An essay on salt : containing notices of its origin, formation, geological position and principal localities, embracing a particular description of the American salines : with a view of its uses in the arts, manufactures and agriculture : delivered as a lecture before the New-York Lyceum of Natural History / by Jer. Van Rensselaer. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    I. Primary, or Primitive. II. Secondary. III. Tertiary. IV. Occasional; which last will include, 1. Volcanic Productions. 2. Coal. 3. Alluvia. 4. Clay and Sand. 5. Lignite and Peat. The reasons for thus relinquishing the class transi- tion are, 1. Tlie limited extent of the formation. 2. The difficulty existing in discovering its line of demarcation. 3. Its total absence, in many cases, leaving the secondary resting on the primary. In America, particularly, this opinion may be likely to prevail. In this immense continent the transition seems but as a band lying on the side of our primitive range of mountains. To the north- west it frequently changes place with the secoiidaiy, and is often so confounded with it as to lose its original features ; while to the south-east there is no vestige of its existence, although it may be placed under the tertiary and alluvia that skirt oui coast. ’Po the north-'west the secondary sandstone, in highly