In the meantime, moreover, almost every Negro minister was otherwise engaged in spiriting away fugitives from the slaveholding States through the North into Canada. They were in touch with men in other centers, found out what was going on, learned what was the trend of things, and planned to act accordingly. And well might they be so engaged; for not a few of these ministers were fugitives themselves, and whether or not their freedom had such origin, all Negroes in the North were, after the passage of that unconstitutional drastic Fugitive Slave Law of 1850, in danger of being apprehended and enslaved without what civilized countries regard as due process of law. Some of the ministers themselves had to move for safety into Canada during this crisis, carrying in some cases practically all of their congregations with them. [Illustration: JOSIAH HENSON A pioneer Methodist preacher in Canada. The Prototype of Uncle Tom's Cabin.] The Negro minister easily learned also the power of the press. Much time which they would have under other circumstances devoted to the edification of their flocks they had to spend in raising funds to purchase printing plants and in editing the publications issuing therefrom. They could deliver their message to their congregations, they could occasionally address thus groups of the other race; but their message needed a wider circulation in a more enduring form. There were, therefore, during this crisis few Negro ministers of literary attainments who did not either undertake to edit a newspaper or to contribute thereto. If they had a message worth while, the abolition papers would generally delight in publishing it. If they refused and the message was a burning one, the Negroes would establish an organ of their own.