PAtARE 2 co ow- = oa eee eee eee os s-~ 2-0 ~ een Ses Spee eee ees & 0. 92 
OGRA ee a celvec See ceeG ee eien oc oc. Je segs SEER cn oce s-se la Cor eee ae 0. 27 
Ciloride of souinm-- 225i 52... ..---- SERPs oon a a ee 0.74 
Bellple PROSphGED ACIG: J... J... . ~~... - eee ee oo a BB eee Trace. 
Taroluble pioenorte 40id °° --.\..-.-. .- SoRemetc. oo ss as bce ne vee 2.07 
RO IARTINGIO Ee: Hebe feb. Woes on oo ae cece. con pol 0.96 
CAT OTIE RAEI ean. oie came eon soe 2 | EBs Op eae wee es on 1.27 
PICA MRE Oia oo a caso le a wes wl = = ~ ee oe ne be ve ee 57.53 
100. 00 
NOTES. 
SuGAR.—It being a well-known fact that the crystallization of sugar 
is materially affected by the presence of mineral matter in the solution, 
M. Monier conceived the idea of estimating the amount of ash con- 
tained in corresponding sugars, with a view to the determination of the 
amount of crystallizable sugar therein contained. He found that mul- 
tiplication of the weights of ash by the co-efficient 5, and subtracting 
the product from the number obtained by the saccharimetrical test, 
left a remainder which indicated the weight of refined sugar which 
should be obtained from the product to be treated. 
Suppose that titration of a sugar solution shows 95 degrees and 1.50 
of ash. The latter weight multiplied by 5 gives 7.5, which subtracted 
from 95 leaves a remainder of 87.5, representing the quantity of sugar 
which may be produced. 
AGARICUS F@TENS.—The following are the results of an analysis of 
Agaricus fotens, made by Mr. Sacc: 
RGR eet cs ns nc nota e eo ee ccc coc cc. ae. Ce caclne cei ae ot Cee eee 67. 20 
WPGRTIINRUG oe seo ae cae Cok ese cite lat oc. 3s eee dh So oe cod ee 0. 60 
CCHICTACIGs else eo BEERS kk. wc 5 Se cee cecal cceke Gaeeeee ee 0.09 
PRR ee Se iis phates wacced Ono c ee «cco Renee es Oe COS credible 4.66 
ISPS il eo eb. ee ee ee ee ceeee sc - 1,55 
[Dl SOUS 6 (65 EES. SoS S45 a oo SAS SOUS BOpAarc ss: 20. 09 
Hai2crd. odorous and coloring matter . >=. seeeeses->-- «<= -----=- 926 cake ae 0. 68 
Sh... J6h a a ee ee. Se eae ay eee ee Bakes 
100. 00 
Tospacco.—It is generally well known that when evil effects, or indeed 
any effects whatever, follow the use of tobacco, they are due to the 
nicotine contained in the leaf. M. Heubel has shown, from certain 
investigations upon the chemical properties and poisonous action of 
tobacco-fumes, that, since the alkaloid is practically inactive in the 
free state, it is probable that the nicotine is contained in the leaf in the 
state of a salt. 
GROWTH OF TREES.—M. Breuil states that, while visiting a small 
park connected with the Chateau d’Compeigne, he observed that some 
of the horse-chestnut trees had been decorticated to a height of 30 to 40 
centimeters, and ascertained that this condition had existed a long time. 
Being surprised to find the trees living in this condition, he determined 
to seek the cause of this unusual continuation of vitality. Knowing 
the possibility of plants receiving their nourishment, in the way of 
organic matter, from the atmosphere, he determined upon an estima- 
tion of the percentage of mineral matter contained in the wood of 
the part decorticated and that above it, in order to find the possible 
source of this important element so necessary to the healthy growth 
of plants. The following statement indicates the proportions of ash 
contained in the different parts: 
