Oct. j, 1894.] THE TROPiCAL AGRICULTURIST. 
223 
CEYLON MANUAL OF CHEMI- 
CAL ANALYSES. 
A HANDBOOK OF ANALYSES CONNECTED WITH 
THE INDUSTRIES AND rUBLIC HEALTH OF 
CEYLON FOR PLANTERS, COMMERCIAL MEN 
AGRICULTURAL STUDENTS, AND MEMBERS OF 
LOCAL BOARDS,, 
By M. COCHBAN, m.a., f.c.s. 
(Continued from page 
APPENDIX— (Contin uccl. ) 
Tanning Materials. 
The following list drawn up by Air. W. Arthur 
de Silva (Magazine, School of Agriculture) " con- 
tains a number of trees common in Ceylon which 
yield tanning materials in different parts of their 
structure." 
Acorua Calamus 
Acacia Catechu 
Areca Catechu 
Anacardium Occidentale 
Barricgtonia Acutangula 
Do Bacemoa v ... 
Do Speciosa ... 
Bassia Longifolia 
Butea Frondosa 
Cassia Auriculat 1 
Carey a Arborea 
Carilla InVegriina 
Casuaiina Equisetei'olia... 
Calotropis Giganter. 
CalophyJlum Inoph) lluiii 
Diospyros Embryopteria 
Eugenia Bradeata ... 
Erythriua Iudica 
Ficus Glomerata 
Do Ben{.'halensis 
Do Beligiosa 
LagerstrcmiaParvifolia... 
Maugifera Indica 
Mimusopa Blengi 
Psidum Guava ... 
Punica Granata 
Phyllantbua Embollica ... 
Hliizophom Mucronata ... 
Semecarpus Gardneri ... 
Syzygium Jambplanniu ... 
Xhespes a Populnea 
Tenuis alia Bellerica 
Do Chebula 
Do Glabra . . 
Do Catappa 
Vatcria Acuminata .. 
xVatica Koxburghiana 
29 
Common 
' name. 
'Sinhalese. 
Wadakaha 
Katkihiri ... 
Puwak 
Kaju 
Elamidella 
Midella ... 
Mudilla ... 
Mi 
Kela 
Jtanawara... 
Kahata ... 
Davata 
Whip tree... 
Wara 
Domba 
Timbiri ... 
Tembilya .. 
Brabadu ... 
Altikka 
Nuga 
Bo 
Miuuta ... 
Amba 
Munamal ... 
Pera 
Deluu 
Nelli 
Kailol 
Badulla ... 
Madau 
Surya 
Bulu 
Aralu 
Kumbuk . 
Kottamba . 
Hal 
Mendovd . 
The portion 
which con- 
tains tan. 
Leaves 
Heartwood 
Fruit 
Bark 
Bark 
Bark 
Bark 
Bark 
Bark 
Bark 
Bark 
Bark 
Bark 
Whole plant 
Bark 
Fruit 
Bark 
Bark 
Bark 
Bark 
Bark 
Bark 
Bark 
Bark 
Bark 
Fruit; 
Fruit 
Bark 
Bark 
Bark 
Bark 
Fruit 
Fruit 
Bark 
Bark 
Bark 
Bark 
The following table from "Chemistry: Theoreti- 
cal, Practical, and Analytical," shews the per- 
centage of tanning in a number of well-known 
tanning materials : — 
Oak bark, 100 years 
old 
Oak bark, young... 
.Mimosa hark 
Willow hark 
Do Leicester 
Do Weeping... 
Larch bark 
Cork tree bark ... 
Do do 
Hemlock bark 
Divi-divi, inferior 
Divi-divi 
Valonia, Smyrna.. 
Do do ... 
Do do ho- 
ney dewed 
Valonia Camatina 
Do Greek ... 
Myrabolans 
Do good 
sample 
Myrabolans pulp, 
without stones... 
Myrabolans stones 
after washing and 
drying 
Sumach ... 
,, Palermo ... 
,, Malaga ... 
,, Virginian 
Catechu, Bombay, 
light color 
Catechu, Bombay, 
light color 
C a t e c h u, Pegu, 
(catch?) dark brown 
Catechu, Bengal ... 
Mangrove bark ... 
Do 
Tormentil root ... 
Balsamscarpum ... 
Hemlock extract... 
Per 
cent. 
8-45 
13-87 
27 -02 
31)5 
6-80 
16 -40 
351 
12-16 
12-53 
13!)2 
29-80 
49-2.5 
34-78 
32-25 
22-00 
26-00 
22-00 
20 91 
35 08 
55-76 
4-02 
1935 
24- 37 
10-40 
10-00 
26-32 
55-00 
46-88 
44-00 
28-00 
1721 
46-00 
50-00 
25- 00 
Authority. 
Mill ler 
do 
W. N. Evans 
Mulligan and Dowling 
Davy 
Cadet de Gassincourt 
Mulligan and Dowling 
do do 
W. N. Evans 
Mulligan and Dowling 
do do 
G. Miil ler 
Mulligan and Dowling 
W. N. Evans 
do 
do 
do 
Mulligan and Dowling 
W. N. Evans 
do fWhjn 
do 
G. Mullet* 
Mulligan and Dowling 
Frank 
Cadet de Gassincourt 
Mulligan and Dowling 
Davy 
Mulligan and Dowling 
Davy 
\V. G. Fry 
W. N. Evans 
Cadet 
J. Watts 
Do 
(Extracts from the City Analyst's Annual 
Report, 1890). 
Colombo 10th January, 1891. 
Town Water. 
In a letter to the Hon'ble the Colonial Secretary 
of 3rd September 1889, the late Chief Resident 
Engineer of the Colombo Water works submitted, 
and commented at great length upon my monthly 
analyses of the Town water up to that date. This 
letter, supplemented by my remarks, has been 
before the -Municipal Council. I need not, there- 
fore, refer in detail to any of these analyses : but 
I shall embrace in the present report the analyses 
made from September 1889 to December psyo, 
