Outbreak at Salford Jail.  — In the Salford, England, jail there was a sudden outbreak of diarrhea of a choleric type, which affected more than half of the prisoners; while of the officers and their families, who were distributed throughout the building, not one was attacked.  The food of the convicts was examined and found [...]

DISEASES FROM MINERAL IMPURITIES IN WATER.

Purifying Ingredients.-since all rivers, spring- and well-waters contain a certain amount of dissolved matters, taken up from the soil through and over which they pass, it becomes a very important consideration to determine what these ingredients are in any particular sample of water, and also the kind and degree of [...]