We are here to inaugurate the Geological Hall, which has grown out of the geological survey of the State. To make the occasion memorable, a distinguished statesman of your own State, and Mr. FRANK C. GRAY, were expected to be present and address you. The pressure of public duties has detained Mr. SEWARD, and severe sickness has detained Mr. GRAY. I deeply lament that the occasion is lost to you to hear my friend Mr. GRAY, who is a devotee to science, and as warm-hearted a friend as ever I knew. Night before last I was requested to assist in taking their place--I, who am the most unfit of men for the post. I never made a speech. I have addressed learned bodies, but I lack that liberty of speech--the ability to present in finished style, and with that rich imagery which characterize the words of the orator, the thoughts fitting to such an occasion as this. He would limit himself, he continued, to presenting some motives why the community should patronize science, and foster such institutions as this. We scientific men regard this as an occasion of the highest interest, and thus do not hesitate to give the sanction of the highest learned body of the country as an indorsement of the liberality of this State. The geological survey of New York has given to the world a new nomenclature. No geologist can, hereafter, describe the several strata of the earth without referring to it. Its results, as recorded in your published volumes, are treasured in the most valuable libraries of the world. They have made this city famous; and now, when the scientific geologist lands on your shore, his first question is, "Which is the way to Albany? I want to see your fossils." But Paleontology is only one branch of the subject, and many others your survey has equally fostered.