740 Gwynne- Vaughan. — Observations on the 
The simplest way of getting over the matter would be to 
accept the stelar origin of the central parenchyma in all 
cases, and to regard the internal endodermis as never strictly 
homologous with the outer. But still the other alternative is 
theoretically possible, and should not at once be rejected as 
inherently improbable. 
In conclusion I have to thank Professor Bower and Dr. Lang 
for the assistance they have given me in obtaining material, 
and for their valuable advice upon various points in relation 
to my work. I have further to express my gratitude to the 
Director of the Royal Gardens, Kew, the Director of the 
Royal Gardens, Calcutta, and to Mr. Hemsley of Darjeeling, 
for their kindness in providing me with much useful and 
valuable material. 
