THE VEGETABLE CELL. 
393 
Vegetative Cone . A remarkable difference in the mode of 
development of the punctum vegetationis occurs almost uni- 
formly between Cryptogams and Phanerogams. In Cryptogams 
the whole of the cells of the primary meristem almost invari- 
ably owe their origin to a single mother-cell lying at the apex 
of the pimctum vegetationis, and called the Apical Cell. In 
Phanerogams, on the other hand, without exception, there is 
no single apical cell of this character ; even when a cell lies at 
the apex, it is not, as in the former case, distinguished by its 
greater size, nor can it be recognised as the single original 
mother- cell of all the cells of the primary meristem. 
We have attempted to give here only the merest outline of 
the constitution of the cell and of tissues. For the further 
elucidation of the subject we must refer our readers to the 
more modern text-books of botany, especially Prof. Sachs’s 
“Lehrbuch,” an English edition of which is about to be 
published by the Clarendon Press, Oxford. 
