304 Annual Report for 1887 of the OonsuUing Chemist. 
The price of this was M. a ton. The fibre, it will be noticed, 
Was considerably higher than in linseed-cake, and bearing in 
mind the nature of the materials, I hardly think it compares well 
with linseed-cake. 
Peruvian Guano. — -The improvement in respect of guano 
lioticed in my last report has been continued ; and, generally 
speaking, the samples submitted have agreed well with the official 
analyses given, and the guanos have not been at all dear as 
compared with other manures. 
Fish Guanos. — Last year I gave the results of determination 
of oil in several differeiit samples, and spoke of the variation 
found in them. In two samples sent to me by a member of the 
society, which were both charged at the same price, I found the 
oil to vary considerably, one sample containing 11-4 per cent., 
and the other 21-9 per cent. 
Sud-Galce. — A sample of this manure was sent to me with 
the request that I would determine the amount of potash pre- 
sent, of which it was said to contain a large quantity. It was 
stated to be made from the washings of wool after the oil had 
been squeezed out. The following is my analysis : — 
Moisture 15-6G 
* Organic matter 34' 29 
Phosphate of lime ........ traces 
103 
904 
3 9-92 
10000 
' Containing nitrogen . . . . . . 1 '81 
Equal to ammonia . . . . . .2-19 
' Including potash (K^O) -27 
Equal to sulphate of potash . , . . . '51 
It will be seen that the amount of potash was very small, 
whilst there was nearly 40 per cent, of sand. The price, 20,s'. 
per ton at the works, would hardly bear the additional 10s. 
chargeable for carriage in the case under notice. 
Sewage Sludge. — A rather large number of samples of this 
material have been sent me during the year. As showing the 
great variety among them I append the following analyses : — 
Carbonate of lime 
- Alkalies &c. 
Sand . 
Moisture 
Organic matter 
Phosphate of lime 
Carbonate oflime 
Oxide of iron, alumina, alkalies, 
Sand 
Containing rtitrog'en 
Equal to ammonia 
No. 1. 
No. 2. 
No. 3. 
58-40 
43 01 
45-45 
l4-8() 
12-85 
12-43 
1-08 
•2fi 
3-53 
14-61 
5 23 
24-43 
2-24 
4-(;4 
3-34 
8-84 
34-01 
10-82 
100-00 
100-00 
100-00 
•fiO 
•49 
-7:1 
•72 
•69 
-87 
