The Popular Science Monthly, Volumen40D. Appleton, 1892 |
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Página 59
... species of plants known to botanical science and the number of those which are employed by man . The species of flowering plants already described and named are about one hundred and seven thousand . Acquisitions from unexplored or ...
... species of plants known to botanical science and the number of those which are employed by man . The species of flowering plants already described and named are about one hundred and seven thousand . Acquisitions from unexplored or ...
Página 60
... species . If we should add to this short catalogue all the species which , without cultivation , can be used by man , we should find it considerably lengthened . A great many products of the classes just referred to are derived in com ...
... species . If we should add to this short catalogue all the species which , without cultivation , can be used by man , we should find it considerably lengthened . A great many products of the classes just referred to are derived in com ...
Página 61
... species of flowerless plants also . Of the five hundred ferns and their allies we employ for other than decorative pur- poses only five ; the mosses and liverworts , roughly estimated at five hundred species , have only four which are ...
... species of flowerless plants also . Of the five hundred ferns and their allies we employ for other than decorative pur- poses only five ; the mosses and liverworts , roughly estimated at five hundred species , have only four which are ...
Página 64
... species of cereals is certainly known in the wild state . Now and then speci- mens have been gathered in the East which can be referred to the probable types from which our varieties have sprung , but doubt has been thrown upon every ...
... species of cereals is certainly known in the wild state . Now and then speci- mens have been gathered in the East which can be referred to the probable types from which our varieties have sprung , but doubt has been thrown upon every ...
Página 65
... species when it seems to be peculiarly susceptible to the influence of its sur- * Food - grains of India , A. H. Church , London , 1886 , p . 34. In this instructive work the reader will find much information regarding the less common ...
... species when it seems to be peculiarly susceptible to the influence of its sur- * Food - grains of India , A. H. Church , London , 1886 , p . 34. In this instructive work the reader will find much information regarding the less common ...
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