The Rev. P. Kerru on the Origin of Buds. 433 
ascend the stem either through the tubes of the medullary sheath, 
or through the tubes of the alburnum, or through both; and 
although botanists have hitherto had their doubts with regard 
to the accuracy of the observations in question, yet, after the 
novel and extraordinary views of Nature which have been opened 
up to us of late by a microscopical observer of undoubted ability 
and veracity, we must not be surprised at the wonders seen by 
others, nor discard their alleged facts without due examination. 
3.32 XXII. Obser- 
