Comedian Adam Sandler once mentioned, "Chemistry may be a and poor thing. Biochemistry is useful as soon as you make love with it. Chemistry is actually terrible once you make break with it." All joking aside, chemistry is one of the most crucial components in just about any…

This is not the least of the gayeties of Paris. However, these edifices of the transition from the Romanesque to the Gothic, are no less precious for study than the pure types. They express a shade of the art which would be lost without them. It is the…