A grammar of botany : containing an explanation of the system of Linnaeus, and the terms of botany, with botanical exercises, for the use of schools and students : illustrated by forty-five engravings : multum in parvo / by Robert John Thornton, M.D.

  • Thornton, Robert John, 1768?-1837.
Date:
1818
Catalogue details

Licence: Public Domain Mark

Credit: A grammar of botany : containing an explanation of the system of Linnaeus, and the terms of botany, with botanical exercises, for the use of schools and students : illustrated by forty-five engravings : multum in parvo / by Robert John Thornton, M.D. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    GRAMMAR OF BOTANY. INTRODUCTION. UTILITY OF THE SCIENCE. I. BOTANY is a name given to that part of Natural History, which treats of vegetables or plants as a science. II. Plants, according to the science of botany, are divided in classes ; orders ; genera ; species ; and varieties. III. The classes of the sexual systems of Lin- naiUS) are 24, the orders 121, the genera 2000, the species about 30,000, and the varieties al- most innumerable. Observation Such arrangements of botanists are so many steps by which we arrive at a knowledge of plants. By means of classes,a certain number of plants, of certain com- mon properties., are brought under review : by orders, a still less number: and by genera, the number is still further diminished. IV. The true botanist will first discover the class, next the order, then the genus, aud lastly 1*