ON THE JUICE OF THE BUGAR-CANE. 341 
ters of letters patent. If that feeedom has been beneficial to the artists, 
it is no less certain that it has been injurious to the originator of their 
art. The public can, however, console themselves for this unhappy con- 
sequence of a useful decision, by reflecting that to a man in Mr. Talbot's 
circumstances, the position of a victim for the public good is a compara- 
tively easy lot, and Mr. Talbot has reason at the same time to congratu- 
late himself that he has not like some inventors, lost the credit of his 
invention, although like some inventors, he has acquired but little sub- 
stantial gain from his ingenuity. — * Photographic Journal.' 
RESEARCHES ON" THE JUICE OF THE SUGAR CANE IN 
MAURITIUS, AND THE MODIFICATIONS IT UNDERGOES 
DURING MANUFACTURE. 
BY DR. ICERY. 
President of the Chamber of Agriculture. 
Translated by James Morris, Esq., Representative of the Chamber of Agriculture 
of Mauritius. 
(Continued from page 302. ) 
Part II. — Microscopical Examination. 
At different periods the juice of the sugar cane has been the object of 
numerous investigations. Chemistry has brought to light the different 
substances, the aggregate of which constitutes the liquid, and has described 
with more or less success the intimate value and qualities of these sub- 
stances. It has besides determined with precision the modifications 
peculiar to each of them, under the influence of those agents which are 
made use of in the manufacture of sugar, and has by such means put 
the planter on his guard against those alterations which he had to 
contend against. If, however, the chemical properties of cane-juice have 
been carefully studied, it must be acknowledged nevertheless that its 
physiological condition has been altogether neglected. Even in those 
writers who have most recently treated on the composition of the sugar- 
cane, no precise indications will be found on this subject. It may, 
doubtless, seem at first to be a matter of astonishment that, after so many 
minute investigations of the structure of this plant, it should still be 
considered necessary to submit cane-juice to new microscopical 
researches, and that it is still possible to deduce from such investigations 
certain facts worth of remark. 
But, as will presently be seen, this juice is not only a liquid in which 
a certain number of immediate organic and mineral substance are found 
in solution ; but it contains, in addition, an organic mattar appreciable 
oj the microscope, and which, in the manufacture of colonial sugar, has too 
great an importance not to be considered worthy of the attention of the 
manufacturer of sugar, and of a special examination on my part. It is 
