398 Quarterly Ueport of the Chemical Committee, June, 1891. 
injurious to meat. As this matter is of considerable importance, I 
am doing what I can about it. I have asked for specimens to be 
sent over, and also for information what the cargo of the ship was 
in which the infestation was supposed to be bi'ought, and where it 
came from. 
Meanwhile, I have suggested a very simple arrangement, which 
I know answers excellently out of doors, for attracting many kinds 
of flies, which they do not escape from, and so without trouble are 
destroyed ; and also one or two other arrangements which might be 
expected to be of use, especially that all waste and rubbish at the 
butcher's should be collected at short intervals, and so treated that 
the maggots should be destroyed. This seems all that can be done 
at present ; when specimens and information arrive I will duly attend 
to them. 
Eleanor A. Ormbrod. 
QUARTERLY REPORT OF THE CHEMICAL 
COMMITTEE. 
June, 1891. 
The following five cases have reference to purchases of liuseed- 
cakes which were sold with a guarantee of purity, but were 
found on examination to be impure. 
They exemplify the uselessness of such a guarantee as " 95 
per cent.," or " made from linseed of 95 per cent, purity" (ex- 
pressions which can only be properly applied to the seed, and 
not to the manufactured cake), and, indeed, of any guarantee 
other than that of " pure linseed-cake." 
1. Mr. Silvanus Brown, of Slipton, Thrapston, Northampton, 
sent for analysis on February 3, 1891, a sample of linseed-cake. 
The following report was returned to him on February 7 : — 
Moisture ........ 12-04\ 
Oil 8'33 
* Albuminous compounds (flesh-forming matters) . 25*37 
Mucilage, sugar, and digestible fibre . . . 3-t-69 
Woody fibre (cellulose) 8'56 
* Mineral matter (ash) 11-01>' 
' Containing nitrogen 4'06 
^ Including sand 5 50 
This cake has a considerable amount of sand in it. This ought not to 
exist. The quality is low, 
A second .sample, sent on March 3 by Mr. Brown frou) the same 
