yo HORN : 



Farms Dairy in cans that are cleaned daily and treated with 

 steam daily at Overlook Farms, and are then returned ready 

 for use to the several supply farms. This excludes water 

 used in washing the cans from the list of probable origins of 

 the disease. Water drunk bj' cows is of course no longer, if 

 ever, considered as a source of typhoid, as cows do not develop 

 typhoid and as cows do not excrete germs from their intesti- 

 nal tracts by way of their udders. 



To locate the probable source among these several supply 

 farms, it was necessary to consider the distribution of the 

 typhoid cases in Cheltenham and vicinity on the several milk 

 routes of the Overlook Farms Dairy. This is shown, by 

 wagons, as follows : — 



Wagon No. i, Seven cases, 

 Wagon No. 2, Three cases. 

 Wagon No. 3, Three cases. 

 Wagon No. 4, Two cases. 

 The written records of the Overlook Farms Dairy show 

 that the milk delivered by these wagons is derived from differ- 

 ent ones among the several supply farms, as follows : — 

 Wagon No. i, from farms i, 9 and 10; 

 Wagon No. 2, from farms 1 , 2, 5, 6, 7 and 9 ; 

 Wagon No. 3, from farms 3, 5, 6, 7 and 9 ; 

 Wagon No. 4, from farms 3, 4, 5, 6, 7, 

 and whatever is left over of the milk from farm 9. 

 It was evident from these figures, that farm 9 is the only 

 farm supplying milk to all of the four wagons. Further, 

 there was no evidence obtainable of intestinal disorders on 

 any of the other supply farms enumerated above ; there had 

 been no change of employees on them for a long time, and 

 there had either been no transients upon them or none show- 

 ing symptoms suggestive of typhoid. 



Farm 9 is the Francis Farm, and has been used during 



the Summer for Fresh Air Outings for children of the H . 



Da}^ Nursery, Philadelphia. On August 17th, or thereabout, 

 an Italian bov named L ., of South Thirteenth Street, 



