ERRATUM. 



Page 74, line 2. For "whereas, Ac," read where, 

 takes the form of a flattened band, 



as 



in the secondary pulvini of Pithecolobium 



saman % it 



-.*. me rorm ot a flattened band, the superior and inferior masses exeeed it m ™rti»i M V I , , " 

 ones fall short of it in horizontal diameter ; * dl8meter * and the ht ™ 1 



