II OCT 1888 



TRANSACTIONS 



OF THE 



ROYAL SOCIETY 



OF 



EDINBUKGH. 



VOL. XXXI. 



BOTANY OF SOCOTRA 



BY 



Pkofessok BAYLEY BALFOUR. 



EDINBURGH: 



PUBLISHED BY ROBERT GRANT & SON, 107 PRINCES STREET, 

 "AND WILLIAMS & NOKGATE, 14 HENRIETTA STREET, CO VENT GARDEN, LONDON. 



MDCCCLXXXVIII. 



