TiKl’OKT OF C'HKMIOAL LAlU)KAT()Ky 
.‘393 
Several samples of the water were collected at the time the above observations were 
made, with results as follows: — 
ANALYSES OF WATER FROJI WHITE NILE IN SUDD REGION 
Pa UTS PER AIilwon 
Number ... 
517 
518 
519 
520 
Date of Collection 
.•\ugust 29th, 1906 
August 30th, 1906 | 
Sept. 2nd. 1906 
Sept. 3rd, 1906 
Solids iu suspeusiou... 
134-0 
4-20 
5-32 
12-78 
Solids in solution . 
111-9 
153-G 
149-2 
134-8 
Oxygen consumed ... 
7-.04 
8-27 
G-G5 
8-21 
“ Free ” ammonia 
trace 
n.d. 
n.d. 
u.d. 
“ Albuminoid ” amniouia ... 
-384 
u.d. 
u.d. 
n.d. 
Nitrates . 
... (N) 
-077 
n.d. 
u.d. 
n.d. 
Chlorides 
... (Cl) 
(i-O.o 
8-13 
4-91 
7-37 
Sulphates . 
... (SOJ 
2-79 
none 
none 
none 
Carbonates 
... (CO,) 
51-22 
71-.50 
GO-12 
53-IG 
Calcium 
... (Ca) 
.8-34 
12-32 
1.5-10 
11-12 
Magnesium ... 
... (.Mg) 
8-92 
8-14 
7* 35 
10-59 
Sodium . 
... (Na) 
2U-GS 
24-27 
20-34 
18-00 
Potassium 
.. (K) 
3-75 
7-65 
3-75 
5-85 
Silica ... 
...(SiO,) 
24-80 
28-40 
32-80 
20-00 
As the above samples were collected at the end of the rainy season, the water contained 
less matter in solution than is usually found. The following analyses of samples collected 
by Mr. Walsh, of the Sudan Irrigation Department, at a later season of the previous year 
(December, 1905), show a higher proportion of dissolved solids. The water was not seen 
until its arrival in Khartoum, so that the observations as to the appearance and behaviour 
of the water could not be made so satisfactorily as in the case of those recorded above. 
While Nile 
water from the 
Sudd region 
collected 
during August 
and September 
ANALYSES OF WATER FROM WHITE NILE IN SUDD REGION 
Collected in December 
Number... 
.307 
308 
309 
31U 
311 
312 
Point of collcctiou 
Bor 
Between 
Hillct 
Down 
Between 
Kodok 
Keuissa 
Nucr 
stream of 
Taufikia 
and Ghabe 
Lake No 
and 
Shambe 
month of 
Sobat River 
Condition of water 
vvhcu sam- 
Slightly 
Clear. 
Clear. 
clear. 
Clear. 
Clear. 
i)lo arrived at Khartoum 
opalescent. 
Brownish, 
Darker 
Darker 
Lighter in 
Lighter in 
F.'iiutly 
Slight 
than 
than 309. 
colour than 
colour than 
coloured. 
sediment 
No. 308. 
Dark brown 
No. 311). 
No. 311. 
Slight 
Dark brown 
sedimeut 
Slight 
Slight 
sodimciit 
sediment 
sediment 
sedimeut 
Oxygen absorbed iu 
10 miuutes 
at 100“ C. 
4-40 
4-64 
o-o*2 
G-08 
5- 3G 
5-50 
Chlorides 
... (Cl) 
7-74 
7-18 
7-.50 
8-88 
3-59 
5-48 
Sulphates 
... (SOJ 
1-12 
none 
none 
none 
none 
none 
Carbonates 
... (COJ 
.58-.5G 
.59-93 
G7-4G 
74 -9G 
.55-41 
49-47 
Calcium... 
... (Cii) 
9-74 
9-74 
9-34 
10-.53 
9.74 
10-18 
^fagnesium 
... (Mg) 
4-41 
4-54 
3-Gl 
4-*28 
3.49 
3-85 
Sodium ... 
... (Na) 
24-32 
25-83 
35.59 
30-29 
12-70 
23-45 
Pot«assium 
... (K) 
1.3-21 
15-30 
17-.39 
17-5G 
7-48 
11-21 
White Nile 
water from the 
Sudd region 
collected in 
December 
