116 TIMEHRI. 
time to time arise under which it may prove advisable to 
obtain the maximum yield from the fields by the com- 
bined use of lime and manures. 
We found at the Botanic Gardens that the average 
annual excess yield of canes due to nitrogenous manur- 
ings, equivalent to 300 lbs. of sulphate of ammonia per 
acre, was 6°85 tons on the not limed land and 6°6 tons 
on the limed land ; thus— 
Produce. 
Not manured ... eee. ee21°7 tons of canes per acre per annum, 
Limed only ... aa ose O5 % ~ ea i 
Manured only... +0028°55 “5 ~ ri aa 
Limed and manured ... 02633°05 3 s ss A 
Or, 
Increase due to Lime... .. 6°65 tons of canes per acre per annum. 
” » » Manures 4, 6°85 ¥ » ” ” 3 
I 9» » Lime and | 
manures eee one ore @ ae) 99 ” ae 99 
Manures.—From almost the first introduction of artifi- 
cial and foreign manures into agricultural pra€tice advan- 
tage was taken of them by sugar cane planters. When 
I first went to Barbados in 1879, I not unfrequently heard 
old planters boasting about the crops they had reaped in 
the forties, and bewailing the falling-off in the quality of 
the guano imported into the island in 1878 and 1879 as 
compared with that which they had used when young men. 
Asan instance ofthe early extensive use of foreign manures, 
in 1845, 5,054 tons of manure, valued at £36,961 were im- 
ported into Barbados, of which guano in value equal to 
£30,397 was received dire& from Ichaboe. Unfortunately, 
whilst records may be found of the amount of guano im- 
ported in those early years, no records of experiments with 
it exist. About the first accounts of manurial experi- 
ments with the sugar cane are those of Mr. J. KRAJEN- 
