. Elementary principles of agriculture; a text book for the common schools. 8 Elementary Principles of Agriculture yeast, except that their sides are flattened by pressingagainst each other. New cells are formed by a singlecell dividing into two cells (Fig. 6). These new cellsgrow to a certain size and divide again, and so on tillgreat numbers are formed. (See Fig. 14, C.) 14. The LivingSubstance of Cells.The cell is the unitout of which all plantand animal bodies aremade, just as thebrick is the unit outof which buildings aremade. Within each cell-wall is the living substance,called protoplas
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. Elementary principles of agriculture; a text book for the common schools. 8 Elementary Principles of Agriculture yeast, except that their sides are flattened by pressingagainst each other. New cells are formed by a singlecell dividing into two cells (Fig. 6). These new cellsgrow to a certain size and divide again, and so on tillgreat numbers are formed. (See Fig. 14, C.) 14. The LivingSubstance of Cells.The cell is the unitout of which all plantand animal bodies aremade, just as thebrick is the unit outof which buildings aremade. Within each cell-wall is the living substance,called protoplas