.316 
SCIENTIFIC NOTES. 
1. 
2. 
. 
•81 
•728 
•71 
•723 
•69 
•653 
•60 
•551 
•54 
•426 
•43 
. -418 
•42 
•618 
•59 
•580 
•58 
. -565 
•56 
. -681 
•65 
White Oak . 
Scrub Black Oak 
Red Oak 
Yellow Oak 
Yellow Pine 
Pitch Pine 
White Pine 
Sassafras 
White Elm 
Bed Cedar 
Black Walnut 
The column marked 1 gives the specific gravity of dried samples of 
the different kinds, and that marked 2 the relative value of specified 
quantities compared with shellbark hickory as a standard, which is 
marked at § 100. Shellbayk hickory is considered the best wood in mar- 
ket for fuel. Next, hard maple and beech are held in highest estima- 
tion. But it will be noticed in the table that several woods are placed 
in advance of the latter. White oak stands near to hickory, and white 
ash next. Yet who, in our markets, would think of paying as much 
for a cord of these as for sound, hard maple 1 But we apprehend the 
table is right in regard to the value of the different woods for fuel. 
With white and red oak we have had some experience, and know, if 
well seasoned, it will equal any hard maple we ever burned. 
But in a green state it is almost worthless. It contains more water 
than maple or beech, and requires much more seasoning to become lit 
for burning. Undoubtedly the prejudice in favour of beech and maple 
arose from this cause. It was generally more plentiful than oak, and 
as it would burn quite readily without much seasoning, and is easier to 
kindle when dry, it was taken into favour. Oak and ash being more 
valuable as timber for manufacturing purposes, naturally would not be 
thrown into market for fuel to so great an extent as beech and maple. 
But as ash, and especially oak contain, more water when green, and 
require a longer time to season thoroughly, they are apt to be used be- 
fore they are perfectly dry, or else become slightly decayed from long 
exposure to the weather. 
Irhtttiui Jtoi 
Alvaro Reynoso's Cold Process of Making Sugar.— -Messrs 
Travers and Co. call attention to this process as. follows : — " Certainly 
no one can say that sugar manufacture is not advancing, when we have 
to chronicle in one year, Fryer's Concretor, the Alcoholic Process (of 
which we hope to give details shortly), and the Cold Process of M. Rey- 
noso. True, neither of these inventions have as yet had any effect upon 
