OBJECTIVE.

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acute pneumonia, and, as has been already remarked, chronic catarrh.

The processes of carding and strip­ping, even since the introduction of Well­mans patent stripper, etc., still fill the air with innumerable particles of dust which pene­trate everywhere, and, in some mills, in a few minutes sufficiently coat a smooth plate of metal to permit the finger to make marks thereon; while a sunbeam discloses the ex­tent to which the atmosphere breathed by operatives is charged with the foreign sub­stances.*

A careful inspection of a very large num­ber of factories has established as the chief non-liygienic conditions, the excess of fly­ing dust, or fluff; the extreme heat main­tained in all departments; the uncomfortable and unhealthful humidity, particularly of

* Dr. Horatio Bridge of New-York City, a classmate, has recently published an admirable translation of the work of Dr. Gottlieb Merkel of Nuremberg, on diseases caused by the inhalation of dust. New-York Medical Itecord, 1874 .

7 *