GUPPY — SCIENTIFIC KNOWLEDGE IN TRINIDAD. 
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be unregistered, there is reason to fear that the mortality 
is really higher than the birth-rate. But however this may 
be, if we take the increase by Government immigration in 
those years at 4000, and that in 1851-61, as given by the 
Census Returns, at 10,000, we should have a total increase 
of 14,000 to the population by Government immigration in 
the last 14 years. As this appears to tally with the other 
statistics, it would seem by this that in the same period our 
population must have increased by about 8000, exclusively 
of the immigration on bounty. 
It is greatly to be lamented that our registration system 
is so imperfect that but a faint idea of the real proportion 
between births and deaths can be gleaned from the returns 
furnished, while we have no account whatever of the causes 
of death nor of the ages and conditions of the deceased per- 
sons. Such statistics are absolutely necessary for the due 
carrying out of measures of social reform. 
After these somewhat disheartening figures it may be 
more pleasant to glance at the advance of wealth as exhi- 
bited by the increase of cultivation and of production. The 
average export of sugar for the three years 1839-40-41 
was 26,856,594 lbs. The average for the three years 1863- 
64-65 was nearly treble, namely, 72,223,187 lbs. Cacao 
exhibits quite as fair a progress. The crops of 1839 and 
1840 do nut seem to have been gathered, the total amount 
for those two years having been 277,000 lbs. The average 
for the years 1841-2-3 was 2,810,000 lbs., while for 1863-4-5 
it was 6,226,500 lbs. As I fear that my remarks on these 
and other subjects, were I to pursue these comparisons, 
might run to too great a length, I refer you for further 
information on all these points to the “ Trinidad Almanack 
and Official and Commercial Register,” and to the “ Statis- 
