Towns > Glasgow > 1828-1912 - Post-Office annual Glasgow directory > 1880-1881

206 ADVERTISEMENTS.
C3- L ^ S O- OJ'VT-
G-RAIN AND GENEEAL GEINDING MILLS;
AND COFFEE ROASTING WORKS.
a-I2;JBIs^E STI^EET
The Coffke Plant, " Coffea Arahica " of Linnseus, is an evergreen, and, as may be inferred from its scientific
name, is a native of Arabia. It produces a pulpy berry about the size of a small cherry, inclosing two seeds,
which, separated from their pulpy envelope,form the well known Coffee beans of commerce. It may be remarked
as a singular fact, in reference to Coffee, that while all of the vegetable kingdom that have been taken under
the care of man have been improved, it alone asserts its independence ; for although cultivation may greatly
enlarge the crop, it as certainly at the same time deteriorates the flavour, and the produce of the wild plant
still maintains the highest figure in the market. It is well known that Coffee would be of no real value
were it not properly roasted — a process which, as it requires much skill, is only to be acquired by experience.
How man became acquainted with the fact that the tasteless seeds of a berry, when roasted, ground, and I
infused, would form a grateful beverage, will most probably remain a secret to the end of time. That the
development of its useful properties depends wholly upon the roasting, is evident. About two hundred!'!
years ago Coffee was first introduced into England, since which its consumption has steadily increased, and I
deservedly so, when its medical properties are considered, it having been found useful in headaches arising ^
from a particular state of the stomach, and much benefit having been derived from its exhibition in cases
of asthma.
A French scientific gentleman, who has directed his attention to this subject, says : — " I have found that *.j
Coffee is better roasted, and more of the aroma retained, when a double cylinder is used — the air between -A
the interior and exterior cylinders acting as a non-conductor of heat. It is done more uniformly, while f^[
the essential oil on which the aroma depends is less liable to be dispersed than when exposed to the fierce
heat of a fire in a single cylinder."
In the double rotatory globular method of roasting as practised at Mr. Minto's Works, Grseme Street,
Glasgow, the above principle is acted upon, inasmuch as the globe (which has superseded the cylinder since |4
the application of steam-power to this branch) revolves in a medium of heated air, which, experience hasi
shown, best prevents the dispersion of the essential oil, or aroma.
DUFFS NON-CONDUCTING COMPOSITION CEMENT.
lor covering Marine and Land Steam Boilers, Pipes, Superheaters, & Cylinders.
DUFF'S Preparation for covering Marine Boilers, Superheaters, and Cylinders, is far a-head
of any other Cement, more especially in three qualities : — 1st. It makes a " Cooler Job"
at two inches thick than any other cement does at three inches thick, hence a greater saving in
weight (it is of itself lighter than any other cement). 2nd. It is very " Elastic," it stands the
rapid expansion and contraction that is sometimes unavoidable without cracking — " A Vital
Virtue." 3rd. It is very "Tenacious;" once it gets a hold upon the metal it sticks fast. In
other words, it excels, 1st, in Coolness and Lightness; 2nd, in Elasticity; 3rd, in Tenacity .j
Ilarine Engineers please ponder over this I '.
DUFF'S PREPARATION FOR COVERING LAND BOILERS, PIPES, HOT AIR HEATERS,
AND BLASTS, is without doubt far superior to any other covering in the market.
The Sole Manufacturers and Proprietors of these Cements are —
]> (J F F, ^ K I ]¥ ]¥ F K, ^ Co.,
129 BROOK STEEET, MILE-EKD, GLASGOW.