Vlll. 



PUBLICATIONS FOR SALE. 



The Bulletin issued quarterly, price sixpence per number or two 

 shillings per annum post free in the Colony. To other subscribers 

 postage extra. 



Vol. XVIII. 1919. 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. 



Vol. XVIII. Pt. 5.— Cane Farmers and Co-operation ; Root Disease 

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

 1915-18; etc., etc. 



Vol. XVIII. Pt. 3. — The Avocado in Trinidad and Tobago 

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



Vol. XVIII. Pt. 4.— Root Disease of Cacao in Trinidad (Illustrated); 

 Varieties of Cane under Estate Culivation 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 Em[)ire, &c., &c. 



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

 and R. O. Williams.— Price 3d. 



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

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



Insects Affecting Vegetables in Trinidad and Tobago, by F. W. 

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

 etc. — Illustrated. — Price 3d. 



Life History ani> Control of the Cacao Beetle, 3 coloured plates, 

 by P. L. Guppy.— Price 6d. 



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

 by F. W. Uiich. -Price 3d. 



Notes on some Insects affecting the Coconut Palm, one colouied 

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



The Cotton Stainek Bug (Illustrated), by P. L. Guppy and Thomas 

 Thornton. — 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 9d. 



The Surinam Witch-Broom Disease of Cacao, by J. B. Rorer. — 

 Price 3d. 



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 Thrips. (Illustrated) by F. W. Urich. — Price 3d. 



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

 Price Is. 9d. each. 



All publications can be obtained from the Head Office of the Depa»rt- 

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

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

 Port-of-Spain. 



