39 



mentary power from the richness of fat materials, and can be 

 ground to produce a rich forage, superior perhaps to the flour 

 of the seeds of cotton and other similar seeds. 



THE TIME WHICH PASSES FROM CULTURE TO PERFECTION. 



It appears to us that the Manicoba has a rapid growth, princi- 

 pally at the commencement of the development, we believe that 

 from the 4th to 5th year it can produce, but the maximum of pro- 

 duction is during the 8th year forward, as with the cocoa and 

 other plants. 



AUGMENTATION OF THE PRODUCTION OF RUBBER IN MANICOBA 



DURING THE EXTRACTION OF THE MILK. 



Manicoba is educated in its production of rubber or of milk, in 

 the same manner as the breasts of animals are habituated to give 

 the maximum production of milk ; during our labours we observed 

 the augmenting in the production of milk, after repeated taps, 

 the fact is known to all the extractors of rubber from Manicoba. 



CITRATE OF LIME AND CONCENTRATED, 



LIMEJUICE.* 



BY THE HON. FRANCIS WATTS, C.M.G., D.SC, F.I.C., F.C.S., 



Government Analytical Chemist and Superintendent of Agricul- 

 ture for the Leeward Islands. 



Interest in citrate of lime has recently increased in the West 

 Indies from the fact that the article is now being made and 

 shipped on a fairly large commercial scale from the Islands of 

 Dominica and Montserrat. In previous papers,! I have discussed 

 the details of its manufacture and have little to add to what has 

 been already said except, perhaps, that it might be found that a 

 well-prepared juice, free from pulp and charred matter, might 

 find direct application in some of the arts, and thereby command 

 a higher price. 



One somewhat important point has however been brought to 

 my notice by one of the West Indian makers of citrate, namely, 

 that hot lime-juice filters readily through suitable cloth. This 

 fact admits of application in the manufacturing process. In 

 making citrate it is desirable first to heat the juice in a still so as 

 to recover the essential oil, which is a valuable commodity ; after 

 •distillation the hot juice can be run through filters, which may 



*West Indian Bulletin, VIII., pp. 167 — 172. 



fWest Indian Bulletin, Vol. II., p. 308, and Vol. III., p. 152. Also in Bulletin of the 

 (Botanical Department, Jamaica, Vol. V., 1898, p. 263; Vol. IX.. 1902, p. 187. 



