vrsTTS TO .so:\rK r.oTAXic gardens abkoad. 27 



I. II. III. IV. V. VI. 



Figure 8. Series of leaves representing individuals grown from acorns 



from Bartram's Oak. 



This signal success may not always be expected, however. 

 Sometinies the cross resulfs in an intermediate stable hybrid in 

 which the first, second and snccoodino' venerations contain only 

 one type which is constant. ( 'nltures of such hybrids reveal 

 nothing as to their origin, and the only method of investigation 

 available in such cases consists in attem]iting to re-make the 

 hybrid by crossing the supposed parents. The entire nundier of 

 plants treated as hybrids in the nnniuals is in need of investiga- 

 tion by the methods indicated above, and the work might be per- 

 formed by any one Avithin the limits of a dooryard or kitchen 

 ffarden. 



& 



VISITS TO SOME BOTA^^ic GARDENS ABROAD. 



By Dr. Pehu Olsson-Seffer. 



In the course of a journey 'round the world for the purpose 

 of studying economic botany, I have visited a numl)er of l)otanic 

 gardens, many of which are seldom seen by traveling botanists. 

 Others are described over and over again, such as the famous 

 tropical garden at Buitenzorg, the Mecca of every student of 

 l)otany, which many want to visit, luit few are fortunate enougii 

 to get the opportunity. I intend in this and following numbers 

 of the Plant World to give l)rief descriptions of these gardens, 

 and to relate some personal impressions of my visits. I regret 

 that it is impossible to publish all the interesting photographs I 



