There are people who give dinners, and who are not cognoscible.    From Wordnik.com.  [The Rise of Silas Lapham] Reference

He is not only the first being, but the first and primary known, the primum esse and the primum cognoscible, as he is justly to be reckoned.    From Wordnik.com.  [The Whole Works of the Rev. John Howe, M.A. with a Memoir of the Author. Vol. VI.] Reference

He wonders why the physiologists of old, having such means of instruction, did not inquire into the secrets of nature: but judiciously concludes, that such questions would probably have been vain; “for, in matters cognoscible, and formed for our disquisition, our industry must be our oracle, and reason our Apollo.”.    From Wordnik.com.  [Christian Morals] Reference

What Berkeley does not seem to have so clearly perceived is that the non-existence of a substance of mind is equally arguable; and that the result of the impartial application of his reasonings is the reduction of the all to co-existences and sequences of phenomena, beneath and beyond which there is nothing cognoscible. ".    From Wordnik.com.  [Thomas Henry Huxley; A Sketch Of His Life And Work] Reference

What Berkeley does not seem to have so clearly perceived is that the non-existence of a substance of mind is equally arguable; and that the result of the impartial application of his reasonings is the reduction of the all to co-existences and sequences of phenomena, beneath and beyond which there is nothing cognoscible.”.    From Wordnik.com.  [Thomas Henry Huxley A Sketch Of His Life And Work]

Or, in other words, they are only cognoscible as.    From Wordnik.com.  [Punch, or the London Charivari, Volume 101, October 3, 1891] Reference