1886.] BOTANICAL GAZETTE. 179 
to lose weight. Calculate per cent. moisture. Put in a glass- 
stoppered bottle, add 10° petroleam spirit for every gram sub- 
Ma 
stance left. cerate fora week or so, shaking several times 
eac ~ Filter. 
A Filtra B. Residue: pan A at ordinary temperature and treat with ether as 
Eva no rate an with petroleum m spir 
aliquot part todry-iG@ PFiltrate ae :—Dry at ordinary egal wg ag aud treat with 
toed nie: Compute; gq, Deter- Fea alcohol as with petroleum spiri 
b. Makea super: mine total) &. Filtrate F. Residue:—Treat with wa 
ficial examination ° Make ult Deter: "G Filtrate:—| H. Residue: erat with dilute 
of fixed oil a: superficial mine total Examine _|soda. 
termine amou examina-|"SU4. | 1. Mucilage |fFiltrate) J. Residue :— Treat 
¢. Ethereal oil hart e the b. Make! 2. Inulin a, Exam-|with hydrochloric acid 
should be looked], tests for |p. Test for 1b wie Re 
1. Tannins! j “Matic ve Ibu WK. Be e\L. Reddue e 
sesolutions of] 7|2. Alka- | 9° Tartaric bie Ms 
dierent strengths % Ea loids| 3° Oxalic ana|"it? 7°-\tative a oe vignin 
and by m ofa - Glucoses oust acids. 
the spectroscop fake dis- eat exain i A For 
identify the chlo- EB. Exa ldaeu ishing ination 0 a or 
pophyll by its spec- ine under eats for sac- starch. cellulose. 
lore seand 
asin A piuouae ean nd es- : 
vid, Compare sec. timate glucose 
tions Oo the plant| snips nade 
ore and after by Fehlin 
aceon: with pe- olution. 
troleum. Note o —- 
thesubstances q’. Asin A’. 
named above and | 
serve change in | 
the plant by use of 
= Ivent. 
cord th a Se en 
vations by. PA gel | es 1 K’. Under|L’ As in a’. 
ings, | micros. " ner blig Gh pe 
ee | ee 
Professor Goodale classifies organic substances as follows: 
A. Products free from nitrogen :— Te eo tag 
i ent 
1) The cellulose group. pare re reese ee Aone 4 eye 
[ (5) Lichenin 
bs Carbohydrates ; aa bee aod: 8) Ga Dax nF 
42. Fra one 
(2. The sugar group. roupa {2 Ca Pg “ | (8) Pectin bodies 
( (1) Oxalic 
II. Vegetable acids 4 
4) Malic id 
III. Fats or Glycerides. IV. Certain astringents. Tannins. V. Glucosides. 
NE Resins. VII. Etherea 1 oils. . 
ets containin : ; 
4. Albomin-like matt neg IL heen Ill. Alkaloids. IV. Unor- 
anized ee 
Thorga bst there classified in “How PlantsGrow”: 
* so me a 
f — Sulphuric. 
Bases. 1 Lime. Acids. Phosphoric. 
Ma ia. 
Oxide of Tron. { tartools 
