. Natural history object lessons : a manual for teachers. S.—CellularTissue. cells, ^f^. ^. Fig. -Cotton Seed andHairs. 24 NATURAL HISTORY OBJECT LESSONS. in some way or other. This is effected by the deposit of asubstance of a woody nature, formed from the half-fluidcontents, on the inside of the cell-wall. In time, the wallsbecome so thick that the cell is almost choked up. Afterthis it undergoes no further change, and may be consideredas practically dead. The hard shell of the cocoa-nut, thestone of the cherry, peach, and plum, and the ivory ofthe seed of the ivory-palm, are all formed
. Natural history object lessons : a manual for teachers. S.—CellularTissue. cells, ^f^. ^. Fig. -Cotton Seed andHairs. 24 NATURAL HISTORY OBJECT LESSONS. in some way or other. This is effected by the deposit of asubstance of a woody nature, formed from the half-fluidcontents, on the inside of the cell-wall. In time, the wallsbecome so thick that the cell is almost choked up. Afterthis it undergoes no further change, and may be consideredas practically dead. The hard shell of the cocoa-nut, thestone of the cherry, peach, and plum, and the ivory ofthe seed of the ivory-palm, are all formed from hardenedshort cells. Tissue formed from the hard tough long cells is calledWoody Tissue. The woody portion of trees, and shrubs and herbs, and indeedof all flowering plants,consists in part of thistissue. It exists alsoin the inner bark ofWhen separated fromraw material for
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Keywords: ., bookcentury1800, bookdecade1890, books, booksubjectnaturalhistory
