Salisbury. — Methods of Palaeobotanical Reconstruction . 279 
of the structures investigated is not sufficiently taken into account in other 
fields beside Cytology. However justified this suggestion, there is always 
a satisfaction and advantage in possessing some means by which a check 
approaching the nature of a proof can be applied to one’s conclusions, and 
this is especially the case with histological detail such as the true form and 
arrangement of cells, which, as was found in the testa of Conostoma 
oblongum , might readily yield totally wrong interpretations. 
