via. 

 PUBLICATIONS FOR SALE. 



The Bulletin issued quarterly, price sixpence per number or two 

 shillings per annum post free in the Colonj-. To other subscribers 

 postage extra. 



Vol. XVIII. 191D. Ft. i.— Wither Tip of Limes (Illustrated) ; Yam 

 Experiments 1918-19 ; Cultivation of Cotton; Nitrogen Content Cacao 

 Soils ; Supposed Cure for Froghoppers ; Bedding Plants for Trinidad ; 

 Fungous Diseases of Roses (Illustrated); Prize Competitions 1918-19. 



J\il. XVIII. Ft. 5'.— Cane Farmers and Co-operation ; Boot Disease 

 and Froghopper Blight ; Contro of Cacao Thrips ; Rice Experiments, 

 1910-18 ; etc., etc. 



Vol. XVIII. Ft. 5.— The Avocado in Trinidad and Tobago 

 (Illustrated); Sugar-Cane Experiments 1917-19; Yams 1918-19. 



Vol. XVIII. Ft. ^.— Root Disease of Cacao in Trinidad (Illustrated); 

 Varieties of Cane under Estate Cultivation in Trinidad 1919 ; Durability 

 Tests with inferior Local Woods ; Tobago Vegetable Prize Competitions 

 1919; Reorganisation of the Board and Department of Agriculture; 

 Development of the Economic Resources of the Empire, &c., &c. 



Vol. XIX. Ft. i.— The Trinidad Cane Farming Industry; Sugar 

 Cane Blight in Trinidad ; Froghopper Blight in Trinidad ; Implemental 

 Tillage ; Mosaic Disease of Sugar Cane in Trinidad, &c., &c., &e. 



Vol. XIX. Ft. 2. — Report on the Froghopper Blight of Sugar Cane in 

 Trinidad ; Trinidad Seedlings and Tests of Varieties ; Cacti of Trinidad ; 

 Storing Sweet Potatoes ; Seasoning Standing Timber, &c., &c. 



Our Local Foods : Their Production and Use, by W. G. Freeman, 

 and R. 0. \Yilliams.— Price 3d, 



The Dashekn : Its Uses and Culture. Illustrated. — Price 3d. 



The Avocado in Trinidad and Tobago. — Illustrated. — Price 3d. 



Insects Affecting Ve-getables in Trinidad and Tobago, by F. W. 

 Urich. Symptoms of pests, Treatment, Preparation of Insecticides, 

 etc. — Illustrated. — Price 3d. 



Life History and Control of the Cacao Beetle, 3 coloured plates, 

 by P. L. Guppy.— Price 6d. 



Insect Notes for 1910-11. Miscellaneous Notes on Cacao Pests, 

 by F. W. Urich.— Price 3d. 



Notes on some Insects affecting the Coconut Palm, one coloured 

 plate by F. W. Urich and P. L. Guppy.— Price 3d. 



Rearing of the Vermilion Froghopper Egg Parasite, by F. W. 

 Urich. — Price Id. 



The Sugar Cane Froghopper, six plates (3 coloured), by F. W. 

 Urich. — Price 9(1. 



The Froghopper Egg Parasite and its Colonization in Cane 

 Fields, by F. W. Urich.— Price Id. 



The Mongoose in Trinidad and methods of destroying it, 2 plates, 

 by F. W. Urich.— Price 3d. 



Control of Cacao Theips. (Illustrated) by F. W. Urich. — Price 3d. 



Annual Reports, Department of Agriculture, 1916, 1917 & 1918.— 

 Price Is. 9d. each. 



Memoir No. 1 - Froghopper-Blight of Sugar-Cane in Trinidad by 

 C. B. Williams, M.A., F.E.S.— Price 2/6. 9 plates (2 coloured) and 32 other 

 illustrations. 



All publications can be obtained from the Head Office of the Depart- 

 ment, St. Clair Experiment Station, post free within the Colony. The 

 Bulletin is also on sale at Messrs. JMuir, Marshall, and Davidson & Todd, 

 Port-of-Spain. 



