53 
Mr. S. Dickinson examined the anatomy of the leaf of 
Efwatakala Grass (Melinis) with special reference to the structure 
of the hairs and the excretion of oily substances. 
Dr. J. W. Munro; Mr. R. N. Chrystal and Mr. R. C. Fisher 
carried out further experiments on the fumigation of plants with 
hydrocyanic acid gas with a view to controlling insect pests. 
Mr. W..B. Turrill made additional determinations of. the 
chloride content of samples of Thames water and of the water- 
supply of Kew Gardens in connection with injuries to plants by 
salt. + 40 
Presentations to the Library during 1922.—The most important 
presentation of the year, as has been the case in many previous 
a has been made by the Bentham Trustees, who, in addition 
pplying the library with the continuation of several periodicals 
facuhvod | in exchange for Hooker’s Icones Plantarum, have presented 
it with a complete set of the fine edition of Galen’s works by 
C. G. Kuehn, forming volumes i—xx. of Medicorum Graecorum 
opera, published at Leipzig, 1821- 33. The works of Hippocrates, 
forming volumes xxi.-xxiii. (1825-27) of this edition of lope writings. 
of the ancient vali, physicians, have also been presented by the 
Bentham Trustee 
The large ellaekic of Sir J. D. Hooker’s original correspon- 
dence, and other manuscript matter, which was deposited in the 
library on loan by the late Lady Hooker, has now been presented 
to the establishment by the Trustees of Sir Joseph’s residuary 
estate. Mr. J. S. Gamble has presented 89 letters written to him 
by Sir J. D. Hooker during the period 1884-1910. ; 
- The Secretary of State for India has presented the reprint 
of the second edition of J. 8S. Gamble’s Manual of Indian timbers, 
_parts 2 and 3 of The botany of Bihar and Orissa, by H. H. Haines, 
and K. Rangachari’s Manual of botan 2. 
From the Secretary of State for the Colonies have been received 
several publications of the Department of Agriculture, Meso- 
potamia, including Administration Report. . . for the year 1921, 
and Dates and date cultivation of the Iraq, by V. H. Dowson, 
parts 1 and 2, of which a copy has also been received. from the 
publishers of the work, Messrs. W. Heffer & Sons, Cambridge. * 
From the Gouvernement général de V Afrique occidentale 
francaise 6 publications of the Inspection générale de l’ Agriculture; 
de Il’Elevage et des Foréts have been received ; : these deal with 
cotton, the ground-nut (Arachis hypogaea), and ‘the oil-palm. ~ ’ 
As in former years the library has received liberal contribu- 
tions from botanical, agricultural and other public institutions, 
particularly those of the British Colonies and Dominions, India; 
Java, the Philippine Islands, Japan and the United States of 
America, and from those of some of the countries of Europe, 
notably. ‘those of Sweden, Denmark, Holland, Belgium, France’ 
and Switzerland. » To the Agricultural Research Institute, Pusa,’ 
the Department of Agriculture, Buitenzorg, Bureau ‘of Sciencé,’ 
