A FORTNIGHTLY REVIEW 



OF THF 



IMPERIAL DEPARTMENT OF AGRICULTURE FOR THE WEST INDIES. 



LIBRAl 

 NEW Yt 

 BOTaNK 



UaKOE 



Vol VTI. No. 161. 



BARBADOS, JUNE 27, 190S. 



Price Id. 



CONTENTS. 



Page. 

 Caciio, Fennont:itiiiii of ... 205 



Oacaci, (iraftingof 107 



Chicks, tliL" Feediiigdf ... 203 

 Oocoa-mits in Portu Rico... 196 

 Cuttee (Jrowiiig in Hawaii 206 

 Corn Cultuie in tlie United 



.States 19!» 



Cotton Notes : — 



St. Croix, Cotton Legis- 

 lation in \.. 198 



St. Vincent Cotton Crop 198 

 Sea Island Cotton 



Market 198 



West Indian Cotton ... 198 

 Cowpeas 206 



Dominica, Rainfall at 



l'\GE. 



Fi'iiit Decay, ' Pre-uooliag' 

 as a Pieventive of ... 

 Fi'uit Pieset-ved in I'line 



Gleanings 



fioat's iSIilk, l,>Liantity and 



(,)nality of 



Insect Notes : - 



(irasshoppeis, Pi>isoned 



F.aitfoi- 



Sleepin.g Sickness and its 

 Preventiiiu 



201 



200 

 199 



204 

 1951 



2i'2 

 202 



Jamaica, Plant Iiiipoita- 



tioii intii 200 



Java, Minor Agricnltuial 



Indnstrie.s of 



Market Reports 



Molasses for Farm Stuck 



Notes and Comments ... 



Our Booksbelf : — 



Tlie Ca.se f.ir the Coat... 



The Principles of Agri- 



cidture 



Le Cacaoyer an t!ongo 



Franij'ais 



Pond Mnd, Utilization of 

 Rats and their Destruc- 

 tion 



Rubi)er Extraction from 



Small Trees 



Rubber in Java 



^JMgar-cane Mills, (tbser- 

 vations on th(^ work 



of 



Sugar Industry : — 



In .lava 



In Keunion 



Manurial K,.x])eriments 

 with Sugar-cane in 

 the Leewaid Islamls 

 Seedling Canes in lb itish 



(iuiana 



Tobacco, Fermentation of 

 Trinidad, Agricult ur.il 



Science Lecture at... 201 



201 



208 

 2(11) 

 2(t0 



21 ».") 



2(1.5 



205 

 202 



207 



201 

 2(17 



19;{ 



195 

 201 



195 



195 



■_'o;', 



Observations on the work of Sngar- 



cane Mills and Deductions 



to be drawn tlierefrom. 



NDER the above tith- Dr. Francis Watts, 

 C.M.G..has contributed to tlie Wi's/ IhiTkh) 

 ^\j'i~^'i\s Bulletin (Vol. IX, p. 85) a lengthy paper 

 of witich we here give the main points. 



The first point dealt with is the manner of ascer- 

 taining and stating the efficiency of the work done by 

 a mill in crushing canes. It is shown that tlie state- 

 ment of the percentage of juice expressed from the cane 

 is not satisfactory, because.' canes, at different times and 

 in different localities contain different quantities of 

 juice, iience a percentage which may repiesent good 

 work under soma conditions may corri'spond with bad 

 work under others. The statement of the amount of 

 sugar remaining in the mccrass is also regarded as 



r> ^ o o 



unsatisfactory owing to the varying amount of sugar 

 present in different canes. 



A suggestion b}' Mr. Lely (Chemist to the Antigua 

 Central Factory) to calculate the amount of juice* 

 rem.iining in the megass in proportion to the fibre, 

 and to state this in terms coiresponding to 100 parts 

 of fibre, is accepted as the most satisfactory niethoil of 

 (■xpressing the efficiency of the mill work. This factor 

 permits of the comparison of mills working under the 

 most diverse conditions, as regards the quality of the 

 cane or juice, or the character of the mills. Similarly, 

 a single mill in a muscovado sugar works can, on this 

 principle, be directly eomji.ucil with a modern mill 

 using maceration. 



Considering the work done at the Gunthorpe's 

 Factory from this point of view, it was found that in 

 1907. the sucrose remaining in the mi'gass corresponded 

 to 804 parts of first mill juice per 100 parts of fibre. In 

 the 1906 working, 1032 parts of first mill juice per 

 100 parts of fibre were left in the megass. The amount 

 of maceration water used was 2U1 per cent, in 1907, 

 and 91 percent, in 190(j. Figures obtained from Java, 



* The juice is assumed to have the same sucro.se content as 

 the juice from the first mill, where multiple crusliing is employed. 

 Hence the expression ' lirst mill juice jier K.Kt of tibre is 

 frequently m.ade use of in this paper. 



