04 
THOMPSON YATES LABORATORIES REPORT 
Coc K L KS — (ontinucd. 
baciHus 
Sample 
Date 
present or 
1898. 
absent. 
231 
April 14th 
Absent 
April 14th 
Absent 
239 
April 21st 
Absent 
247 
April 28th 
Absent 
254 
May otn 
Absent 
268 
May 20th 
Absent 
277 
June 3rd 
Absent 
285 
June loth 
Absent 
349 
Sep. 2nd 
Present 
Sep. 23rd 
Present 
399 
Nov. 4th 
Present 
418 
Nov. 25th 
Present 
Table IV 
Colon 
bacillus 
Sample 
Date 
present or 
number. 
1898. 
absent. 
179 
r CD. 1 1 tn 
Absent 
1 8 1 
Feb. 1 2 th 
Absent 
182 (WJielks) 
Feb. 1 2th 
Absent 
Feb. 25th 
Absent 
234 
A nri 1 ¥ /( til 
245 
April 28 th 
Absent 
286 
June loth 
Present 
288 
June loth 
Absent 
383 
Oct. 14th 
Absent 
426 
Dec 5 th 
Absent 
Gas forming coccus isolated. 
-Periwinkles 
Bacillus, gas forming, no coagulation, no indol, 
neutral reaction. 
B. enteritidis present. 
B. — Preserved Foods 
Condensed Milk. — The temperature at which tinned foods is put up is usually supposed 
to lead to their complete sterilization. The bacteriologist's observations show that, on the 
contrary, many examples of tinned foods are far from sterile, and that, therefore, they may be the 
carriers of pathogenic organisms. 
Thirty-four samples of various brands ot condensed milks were examined bacteriologically, 
and out of these only one appeared free from micro-organisms. 
In the others the number of organisms varied, being very abundant in some samples. 
No pathogenic forms were found. These observations are of importance, because no article of 
food of the nature of milk or meat should be tinned without making absolutely certain that it is 
sterilized. Spore-bearing bacilli similar to the bacillus enteriditis sporogenes can develop in the 
sealed tins if sterilization is not complete, and lead to the production of irritant and harmful 
products. If condensed milk is not sterile it has no advantage over raw milk from a 
bacteriological point of view. 
Note. — The term pathogenic is used to denote those organisms which produce disease in man. 
