[Report of the Medical Officer of Health for Port of London] page 56

City of London 1926

[Report of the Medical Officer of Health for Port of London]

This page requires JavaScript

Table: During the year the undermentioned samples were submitted to the Analyst, who reported as follows:—

Download table as:

During the year the undermentioned samples were submitted to the Analyst, who reported as follows:—

Date. 1926.	Sample.	Result of Analysis.
Jan. 4	Apples	Arsenious Oxide Absent.
„ 4	,,	,, „ 1 /100 grain per 1b.
„ 4	,,	1/60
„ 7	,,	„ 1/400 „
„ 7	,,	„ 1/160 „
„ 7	,,	„ 1/40
„ 7	Egg Yolk	Boric Acid 1.21 per cent.
		1.26 „ „
		0.99 „ „
„ 9	,,	1.23 „ „
		1.35 „ „
		1.31 „ „
„ 12	Tinned Prawns	,, Absent.
„ 12	Apples	Arsenious Oxide 1 /45, 1 /60, 1 /80 grain per 1b.
„ 15	,,	„ 1 /260, 1 /270
„ 22	,,	,, 1/220,1/240
„ 22	,,	„ 1/50
„ 27	Apples	„ 1/120,1/115,1/90,1/12 „
„ 29	Compound Lard	Although the detection of vegetable fat in animal is comparatively simple, the converse is much more difficult. From a microscopic examination of the sterols and the melting point of their antates, after several re-crystallisations, I am of opinion that the sample is not entirely vegetable fat and does contain some animal fat; at any rate, from the results obtained, it would be most unsafe to certify it as entirely vegetable.
„ 29	Compound Lard	This examination required rather a large quantity of material, so I was not able to test for preservatives as queried on the bottle.
Feb. 6	Apples	Arsenious Oxide 1 /30, 1 /200 grain per 1b.
„ 18	,,	„ ,, 1 /200 grain per 1b.
„ 23	,,	,, ,, 1 /350 grain per 1b.
Mar. 6	Raspberry Pulp	Sulphur Dioxide 1,118 parts per million.
„ 11	Apples	Arsenious Oxide 1,/170, 1 /350 grain per 1b.
„ 31	,,	„ 1 /460, 1/700, 1 /750 grain per 1b.
Apl. 10	,,	„ 1/600,1/65,1/70,1/250 „
„ 14	,,	„ 1 /650, 1 /440
,, 22	,,	,, 1 /33, 1 /30
,, 22	Sugar	Mineral matter (ash), 0.38 per cent. No phosphates were present, and the sample was free from poisonous metals, and neutral to litmus. I should consider it quite possible to refine it.
„ 30	Apples	Arsenious Oxide 1 /350, 1 /300 grain per 1b.
May 4	,,	„ 1/570, 1/1,000
„ 5	,,	,, ,, Both samples free from Arsenious Oxide.
„ 25	,,	1 /1,000, 1 /100, 1 /700, 1 /200 grain per 1b. Arsenious Oxide.
„ 26	,,	Arsenious Oxide absent.
„ 26	,,	1 /250 grain per 1b. Arsenious Oxide.
June 2	,,	1/1,000, 1/600, 1/700, 1/300, 1/700, 1/700 grain per 1b. Arsenious Oxide.
„ 3	,,	1 /400, 1 /350, 111,000 grain per 1b. Arsenious Oxide.
„ 8	,,	1 /250, 1 /120, 1 /130, 1 /500 „
„ 9	,,	Arsenious Oxide absent.
„ 9	Gherkins	Crystallised Sulphate of Copper, 0.29 grain per 1b.
„ 16	Apples	1 /500, 1 /150, 1 /500, 1 /40, 1 /250 grain per 1b. Arsenious Oxide.
„ 24	,,	1 /700, 1 /700, 1 /300, 1 /140 grain per 1b. Arsenious Oxide.
„ 30	,,	1 /140 grain per lb. Arsenious Oxide.
„ 30	Canned Spinach	7.73, 9.06, 6.54 grains per 1b. Crystallised Sulphate of Copper.
July 8	,,	2.60 grains per 1b. Crystallised Sulphate of Copper.
„ 8	Apples	1 /500, 1 /1,000 grain per 1b. Arsenious Oxide.
„ 9	,,	1/75,1/1,000
„ 9	Canned Spinach	4.35, 5.36, 3.62 grains per 1b. Crystallised Sulphate of Copper.
„ 28	Apples	(1) 1 /700, (2) Absent grain per 1b. Arsenious Oxide.
Aug. 25	Tinned Cherries	40 parts per million Sulphur Dioxide. The tin gave distinct evidence of Sulphuretted Hydrogen on opening, and I am of opinion that the discolouration of the tin was due to the production of sulphides. The cherries were coloured with a spirit soluble, Eosin.