Outlines of agriculture addressed to Sir John Sinclair ... President of the Board of Agriculture / By A. Hunter.

  • Alexander Hunter
Date:
1795
Catalogue details

Licence: Public Domain Mark

Credit: Outlines of agriculture addressed to Sir John Sinclair ... President of the Board of Agriculture / By A. Hunter. Source: Wellcome Collection.

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    mounted upward to the extreme parts of the plant, where*, meeting with the external air, it became condenfed into a liquor, and in that form returned to the root by the venal fyftem, between the wood and bark. Dr. Hales fet afide this dodfrine, and, in the moll fatisfadtory man¬ ner, made it appear that the vegetable juices rife and fall in the fame feries of veffels, and confequently have no circulation. It is remarkable that Dr. Hervey fhould have been the firft who eftablifhed the circulation of the blood, in oppo- fition to molt of the anatomifts of Europe ; and that Dr* Hales fhould have difproved the circulation of the vege¬ table juices, contrary to the opinion of every naturalifl of his time. \ The feed of a plant, after it has dropt from the ova¬ rium, may be confidered as an impregnated ovum, within which the embryo plant is fecurely lodged. In a few days after it has been committed to the earth, we may difcern the rudiments of the future plant. Every part appears to exifl in miniature. The nutritive juices of the foil infinuate themfelves between the original particles of the plant, and bring about an ex*tenfion of its parts. This is what is called the growth of the vegetable body. a
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