80 STUDIES ON APPLES. 
TABLE 
a | - | | 
| Page 
in 
Name. Author. Date. this Source. 
| | re- 
view. 
ReChinee=s sane: Braconnot...-.-.-- 1825 67 | A very wide range of 
plant tissues. 
| 
DOrsae.. ese Vauquelin ..--..- 1829 68 | (a) From carrot juice 
and (b) from the 
mare of earrot. 
DoRex = hse IN HUY KG Kes ee = eee 1838 697) Sicha eee eee 
| 
Doses as ia gee aA oa 1840) 69 |, Fruit juices\/--- = 5-25 - 
DORs a Chodnewes----- 1844 70 | Pears, apples ........- 
WO stoctes Poumarede and | 1846 691 a 2 ce ee eee are een 
Figuier. 
Dos ssnerse. lnysh Aegean 1847 72 | Fruit maresand fruit 
juices. 
DO. tee | Studev< csc eee 1864 TS NGS Le coe a See remnes 
Dors-se | Giverdy once ee 1875 | 73 | Gum tragacanth....-. 
DORs cee Scheibler......... 1879 fd) || BECUINATC 2 eeeeseeeee 
Doves. ...- Weisberg: ........- 188831) 74s eee GO o28 eer ee 
| 
Divas: Wohl and Van | 1888| 74 |..... do. 2 ees | 
| Niessen, 
| | | 
1) fo ee | Herzfeld. ......... sv. | 75} Beet mare and or- 
| anges. 
Made 
VIL.— Tabular résumé of 
Preparation. 
The mare of the tissues is 
extracted with hot dilute 
alkali after exhaustion 
with dilute hydroehlorie 
acid. The product is pre- 
cipitated by acidifying 
the solution. 
(a) By precipitating with 
alcohol; (6) by extract- 
ing with dilute alkaliand 
acidifying. 
The juice is clarified by 
boiling, then precipitated 
by alcohol. The product 
is then purified by repeat- 
ed solution in water and 
precipiation with alco- 
ol. 
The crushed fruit is boiled 
with water, the product 
filtered, and the filtrate 
precipitated with alcohol. 
From mares by boiling with 
solutions of organic acids; 
from juices by precipi- 
tating with alcohol. 
soluble by boiling 
with water. 
From beet mare by heating 
with water; from oranges |. 
by precipitating the clear 
juice with alcohol. 
