Diarrhea and Dysentery from Impure Water.  — the instances of outbreaks of these two diseases from contaminated water supply are very numerous, and probably most persons can recall examples of this kind.  The impurities which produce diarrhea and dysentery are suspended earthy matters, such as are found in most river waters after a rain; suspended [...]

The Shoulder Joint. — The shoulder joint, formed as it is by the shoulder-blade (scapula), collarbone (clavicle), and the arm bone, is most beautifully designed and executed. It comprises a shallow ball and socket joint, the supporting the freest rotary movements. The shallowness of the socket, however, accounts for the frequent dislocations [...]