"Plant life" Quotes from Famous Books
 ... controlled by that part of the brain called the medulla oblongata. The respiratory, or breathing process, is not instituted for the benefit of man alone, for we find it both in the lower order of animals and in plant life. Nature is very economical in the arrangement of her plans, since the carbonic acid, which is useless to man, is indispensable to the existence of plants, and the oxygen, rejected by them, is appropriated to his use. In the lower order of animals, the respiratory act is similar ...
— The People's Common Sense Medical Adviser in Plain English • R. V. Pierce
... close together stand the stalks, making common cause for soil and light, each but one of many, the fibre being better when so grown—as is also the fibre of men. Impenetrable and therefore weedless; for no plant life can flourish there, nor animal nor bird. Scarce a beetle runs bewilderingly through those forbidding colossal solitudes. The field-sparrow will flutter away from pollen-bearing to pollen-receiving top, trying to beguile you from ...
— The Reign of Law - A Tale of the Kentucky Hemp Fields • James Lane Allen
... is unable to change lifeless into living matter, but has developed organs of locomotion, ingestion, and digestion which enable it to prey upon the plant world and upon other animal forms; and in contrast with plant life it lives at a loss of energy. Expressed in biological formula, the habit of the plant is predominantly anabolic, that ...
— Sex and Society • William I. Thomas
... be more so now, in view of the fact that only a comparatively few years have elapsed since I began my work on plants. Still, after having used vaccines on human beings and animals for twenty-one years, and observing that plant life reacts to an antigen in a similar manner, I am at least entitled to the same conclusions. This gives me an opportunity of knowing years in ...
— Northern Nut Growers Report of the Proceedings at the Twenty-First Annual Meeting • Northern Nut Growers Association
... have been carried out in the forcing of plants by means of artificial light. Some of these were conducted forty years ago, when artificial light was more costly than at the present time. Of course, it is well known that light is essential to plant life and in general it is reasonable to believe that daylight is the most desirable quality of light for plants. In greenhouses the forcing of plants is desirable, owing to the restricted area for cultivation. It has been established that some of the ultra-violet rays which are absorbed or not transmitted ...
— Artificial Light - Its Influence upon Civilization • M. Luckiesh
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