BIBLIOGRAPHY 497 
V. Sterculiacez. 
VI. Anonacez. 
VII. Strophanthus. 
VIII. Sapotacez. 
The full-page black-and-white drawings of the various plants are 
very valuable, and as they are all done on the same system, com- 
parison both with the plants and with other books is not very difficult. 
The expense of these volumes is not excessive, considering the very 
large number of illustrations and the authority of the text. It is 
a pity that this series has for the time being come to an end. 
In Engler’s Pflanzenfamilien, of course, a very complete account 
of all plants is given, and the additions to it made almost monthly 
make it quite possible to find out the latest-named additions to the 
plant-world. The only disadvantage to these volumes is their number, 
size, and lack of illustrations. 
In asimilar, though in a less complete way The Kew Bulletin gives 
the latest list of plants identified at Kew, amongst which are usually 
some from Nigeria, and occasionally special bulletins appear on the 
plants from Nigeria—as, for instance, Bulletin of, Miscellaneous Infor- 
mation, Additional Series No. 9; The Useful Plants of Nigeria, Part 
I, 1908, Part II, Additional Series No. 10, 1912, Part ITI. 
The Bulletin of the Imperial Institute, edited by Sir W. Dunstan, 
which appears quarterly, always contains the most recent information 
with regard to tropical products, including those of the forest. In 
recent years, too, much more has appeared on the subject of the timber, 
gum and oil-seed resources of Nigeria. 
Die Blitenpflanzen Afrikas, by Franz Thonner, 1908, arranged 
as it is in the form of a key, is most useful in identifying many of the 
plants and trees. The black-and-white illustrations add immensely 
to its value. Additions and corrections to this have also been made 
in Die Blitenpflanzen Afrikas, 1913. The last edition is in English, 
and entitled The Flowering Plants of Africa. 
Among more recent books is a Catalogue of Plants collected by 
Mr. and Mrs. Talbot in the Oban district, South Nigeria, identified by 
A.B. Rendle, M.A., D.Sc., F.R.S., and others, and brought out by the 
British Museum in 1913. In this book the flora of Oban is specially 
dealt with, and clearly shows the difference between it and the rest 
of the flora and silva of Nigeria. Although this is mainly a descrip- 
tion of newly discovered plants, the black-and-white illustrations by 
Mrs. Talbot show most accurately their salient features. 
Notes on Nigerian Trees and Plants, by E. W. Foster, late Senior 
Conservator of Forests, contains accurate descriptions of the most 
useful trees, and the native names from the Yoruba country will be 
most useful to anyone working timber in that part of Nigeria. 
32 
