o< MONTHLY. tx> 
Vol. XIII.] 
COLOMBO, JULY ist, 1893. 
[No. 1. 
CEYLON MANUAL OF CHEMI- 
CAL ANALYSES. 
A HANDBOOK OF ANALYSES CONNECTED WITH THE 
INDUSTRIES AND PUBLIC HEALTH OF CEYLON FOR 
PLANTERS, COMMERCIAL MEN, AGRICULTURAL 
STUDENTS, AND MEMBERS OF LOCAL BOARDS. 
By M. COCHRAN, m.a., f.c.s. 
(Contimied from page 734:. J 
Indian Teas. 
HE following, from the work 
of Dr. Battershall "Food 
Adulteration and its Detec- 
tion " are the results of the 
analyses by American che- 
nii.sts of samples represeu. 
ting 2,414 packages of Indian 
Tea 
Analyses of Indian Teas by American Chemists. 
,t . Average 
Per cent. " 
Moisture 
Extract 
Total Ash 
Asli soluble in Water... 
Ash insoluble in Water 
Ash insoluble in Acid... 
Insoluble Leaf 
Tannin 
Theine 
Theine 
5-830 to 6-325 
:-57-8UO to 40-350 
5-050 to 6-024 
3-122 to 4-280 
1-890 to 2-255 
-120 to -296 
47 •120 to 55-870 
13-040 to 18-868 
1-88 to 3-24 
in Tea. 
per cent. 
5-938 
38-841 
5-613 
3-516 
2-092 
-177 
51.910 
15 -.3-23 
2-736 
H. Paul of London is of opinion that 
processes for estimating the theine in 
Dr. B. 
the older 
tea are all more or less defective, giving in 
most cases results that are too low. He has 
accordingly adopted a different process by which 
he has determined the auiount of theine in a 
great many different samples of tea. He finds 
that the theine in Indian and Ceylon teas varies 
in amount from 3-22 to 4-66 per cent, or in the 
perfectly dry tea from 3 43 to 4-96 per cent. 
The following is a table of 28 deternmiations 
of teas from various elevations in Ceylon and 
India. The value of the teas varied from 7d. to 3s. 
per pound, while No. 10 was valued at from Gs. 
to 7s. per pound. A. J. Cownley was associated 
with Dr. Paul in these determinations, and the 
results were first published in the Pharmaceu- 
ticcil Journal. 
Theine in Ceylon and Indian Teas, 
(Paul & Cownley.) 
Ceylon Tea. 
lu a> o) 
« OJ 
o c > 
1 Penrhos ... ... 2,500 
2 F. L. C... 
3 Nahalma ... 300 
4 Hairs from tea 
leaves ... 
5 HardenhuishPekoe 3,500 
6 Woodstock Pekoe 
Souchong ... 4,200 
7 Piadella Broken 
Pekoe... ... 4,800 
8 Morton Pekoe .. 400 
9 Penrhos Broken 
Pekoe... .. 2,500 
10 Strathellie Orange 
Pekoe... ... 2,000 
11 Nahalma Orange 
Pekoe.. ... 300 
12 Venture Orange 
Pekoe .. .. 4,300 
13 St. Leys Pekoe 
Dust ... ... 4,600 
14 Venture Pekoe 
Souchong ... 4,300 
15 Venture Broken 
Orange Pekoe ... 4,300 
16 Calsay Pekoe Sou 
chong ... ... 5,000 
17 Venture Pekoe ... 4,300 
18 St. Clair Orange 
Pekoe... .. 4,200 
Indian Tea. 
.2 " 
'o 
6-8 
6-0 
5- 6 
6- 6 
3-8 
3- 6 
4- 6 
4- 2 
6-4 
5- 4 
5-4 
5-4 
5- 6 
4- 8 
6- 6 
6-2 
5- 6 
4-6 
Theine per 
cent. 
O 
4-56 
4-56 
4-54 
2- 40 
4-08 
3- 44 
4- 10 
3- 98 
4- 64 
4-10 
4-06 
3-74 
3-46 
3-40 
3-98 
3-22 
3-48 
3-90 
4-89 
4-85 
4-80 
2- 57 
4-24 
3- 57 
4- 30 
415 
4-96 
4-33 
4-29 
3-95 
3-66 
3- 57 
4- 26 
3-43 
3- 68 
4- 09 
19 
Pekoe Tips, picked 
1 
out 
7-56 
4-27 
4-62 
20 
Broken Pekoe 
7-00 
4-48 
4-81. 
21 
Pekoe 
6-40 
4-16 
4-44 
22 
Orange Pekoe 
4-80 
4-66 
4-89 
2.3 
Pekue 
5-GO 
4-48 
4-74 
24 
Broken Pekoe 
4-80 
3-76 
3-95 
25 
Pekoe 
5-40 
3-66 
3-86 
26 
"Weak" Tea .. 
6-83 
4-06 
4-35 
27 
Strong Tea 
5-80 
4-18 
4-43 
28 
Mi.xture... 
6-00 
3-64 
3-87 
Avei'age exclud- 
ing No. 4 ...J 
5-58 
4-02 
4-26 
