L55 



Subsequent microscopical examination has proved the 



presence of Large numbers of Bacteria in the infected parts of the 

 fruit, and when the matter from the boll is coloured with 

 "Neelson's" stain, the presence of these organisms is clearly shown 

 by a high power immersion Lens. 



The attack is not found on one plot only as several instances of 

 the presence of this disease 1ms been discovered in districts widely 

 apart. On the other hand, there are pints sewn with the same seed. 

 which, to the present, have shown but little, if any signs of the 

 disease. 



At the present time the outlook for the cotton plots is unfa- 

 vourable, but it is considered possible that with drier weather the 

 effect of the disease will not be so fully apparent. 



So far as the vegetation of cotton goes in Trinidad, the growth 

 and progress of the plants is all that could be wished up to the stage 

 when the bolls begin to swell, and it is only then that the disease can 

 be found on examination by cutting through the bolls, still in some 

 places even close to infected fields cotton is to be found which is 

 apparently free from attack. 



This disease is found to attack Upland, Brazilian and Sea 

 Island varieties, and all suffer alike on the same fields. 



It is not easy under such conditions to prescribe what should be 

 done, and as from published accounts little is known as to an effective 

 treatment, it is fairly clear that cotton cannot be profitably grown in 

 fields where "Boll rot" prevails. 



It is no new, or newly imported disease, and has not come in with 

 imported seed, as it has been observed for some years past — and in the 

 Southern States of America, it has been very destructive for years 

 without a remedy being found other than that of giving up the culti- 

 vation of cotton at least for a time on the lands where it appears.* 



667.-THE BAROMETER IN TRINIDAD, 



"While the sun heats the moist air, and makes it ascend, the 

 aqueous vapour acquires an expansive force, which produces a rise in 

 the Barometer until about 10 in the morning. When this action con- 

 tinues the superfluous air and vapour flow off in the higher regions. 

 and the barometer falls nil about 3 p.m. when it begins to rise by the 

 momentum of the denser descending vapour. This effect is again 

 diminished after 9 p.m. until a second minimum reached about 4 p.m.'" 

 — Cniger, p. 17, Scientific Association, Procd. 



668.— THE LOVE VINE. Cuscutasp. 



The Agricultural Protection Ordinance, No. 20 of 1902, was 

 made with the view to control Diseases of plants, and Destructive 

 Vegetable growths. 



The Ordinance came into operation on 2nd April, 1904. '"Love 

 Vine" or Cuscuta was proclaimed a " destructive vegetable growth." 

 5th March, 1904. 



* There is some evidence that the disease is due to imperfect fertilization. 



