BOTANIC GARDENSOF THE WORLD 



MATERIALS FOR A HISTORY 

 Second Edition 



Statistics concerning the history, organization, and work of more than 550 botanic gardens in 80 countries, 

 from 340 B.C. to A.D. 1938. 256 pages. Price, $2.50. By mail, $2.75. 



ECOLOGY. All Forms of Life in Relation to Environment. 



Established 1920. Quarterly. Official Publication of the Ecological Society of America. Subscription, 

 $5 3 vearforcomplete volumes (Jan. to Oct.). Parts of volumes at the single number rate. Back volumes, 

 as available, $6 each. Single numbers, $1.50 post free. Foreign postage : 40 cents. 



GENETICS. Research in Heredity and Variation. 



Established 1916. Bi-monthly. Subscription, $6 a year for complete volumes (Jan. to Dec.). Parts of 

 volumes at the single number rate. Single numbers, $1.25 j>ost free. Back volumes, as available, $7.00 

 each. Foreign postage : 60 cents. 



Orders should be placed with 

 The Secretary, Brooklyn Botanic Garden, 1000 Washington Ave., Brooklyn, N.Y., U.S.A. 



The Polytechnic • Regent Street, W. 1 



DEPARTMENT OF CHEMISTRY AND BIOLOGY 



Head of Department : H. LAMBOURNE, M.A., M.Sc., F.I.C. 



DAY COURSES 



B.Sc. Degree Special and General (External), London University. Associateship of the 

 Institute of Chemistry (A.l.C.) Diploma. Pre-Medical and ist Medical Courses in Chemistry, 

 Biology, Physics. 



EVENING COURSES 



(a) B.Sc. Degree Special and General (External), A.l.C, Intermediate Science, Pre-Medical 

 Course in Chemistry and Physics, National Certificates in Chemistry. 



(6) Applied Courses in Gas Engineering and Manufacture; Pigments, Varnishes, Paints, 

 Enamels and Cellulose Fimshes ; Oils, Fats and Waxes ; Cosmetics. 



Full prospectus on application to the Director of Education. 



APPLICATION FOR ADVERTISING 

 SPACE IN THE 



Preliminary Programme 



of the 



Dundee Meeting 



(Aug. 30-Sept. 6, 1939) 

 should be made at once to 



THE ADVERTISEMENT MANAGER. 



British Association, 



Burlington House, London, W.I. 



