Since that period, however, it has, like galvanism, been applied to quite a number of useful purposes, as the principal ingredient of collodion. Common cotton is one of the forms of lignine ...

Lamellar ichthyosisis one of several types of skin disorders (skin disorder) which is calledichthyosis. Ichthyosisis a term for a severe and persistent dry skin condition that almost always begins in ...

Sally Mann discusses her photographic process of using collodion, a syrupy solution of nitrocellulose, to prepare a negative. ART21: Could you take us through some of the steps of your photographic ...