Considering the several rules now given, which govern the fertility of first crosses and of hybrids, we see that when forms, which must be considered as good and distinct species, are united, their fertility graduates from zero to perfect fertility, or even to fertility under certain conditions in excess; that their fertility, besides being eminently susceptible to favourable and unfavourable conditions, is innately variable; that it is by no means always the same in degree in the first cross and in the hybrids produced from this cross; that the fertility of hybrids is not related to the degree in which they resemble in external appearance either parent; and lastly, that the facility of making a first cross between any two species is not always governed by their systematic affinity or degree of resemblance to each other.
— from The Origin of Species by Means of Natural Selection Or, the Preservation of Favoured Races in the Struggle for Life, 6th Edition by Charles Darwin

Considering the several rules now given, which govern the fertility of first crosses and of hybrids, we see that when forms, which must be considered as good and distinct species, are united, their fertility graduates from zero to perfect fertility, or even to fertility under certain conditions in excess.
— from On the Origin of Species By Means of Natural Selection Or, the Preservation of Favoured Races in the Struggle for Life by Charles Darwin

If the eating of certain kinds of food under certain conditions involves participation in idolatry then it is disloyalty to the one true God.
— from The Literature and History of New Testament Times by J. Gresham (John Gresham) Machen

3. Box File for Drawings and Photographs The natural supposition would be that advertisers would give this property proper care, filing under correct classifications, indexed for ready reference.
— from Cyclopedia of Commerce, Accountancy, Business Administration, v. 01 (of 10) by American School of Correspondence

You would see the folks from up country comin' in with their loads of oak knees and plank, and logs o' rock-maple for keels when there was snow on the ground in winter-time, and the big sticks of timber-pine for masts would come crawling along the road with their three and four yoke of oxen all frosted up, the sleds creaking and the snow growling and the men flapping their arms to keep warm, and hallooing as if there wan't nothin' else goin' on in the world except to get them masts to the ship-yard.
— from Deephaven and Selected Stories & Sketches by Sarah Orne Jewett

The especial picture of the imagination that becomes faulty under certain conditions, is the picture of one's self.
— from Invention: The Master-key to Progress by Bradley A. (Bradley Allen) Fiske

Hemol with 2% copper.—Dark-brown powd.— Uses: Substitute for usual copper compounds in tuberculosis, scrofula, nervous diseases, etc.—
— from Merck's 1899 Manual of the Materia Medica by Merck & Co.

296 Loiret, Lenten fires in the department of, x. 114 Loitering in the doorway forbidden under certain circumstances, i. 114 Loki and Balder, x. 101 sq. Lokoala , initiation by spirits among the Indians of North-Western America, ix.
— from The Golden Bough: A Study in Magic and Religion (Third Edition, Vol. 12 of 12) by James George Frazer

There is, moreover, no evidence that the magnetic sense, as an example, if it exists, is a direct effect of magnetic forces; it is as easily believed that the body somehow converts magnetic forces, under certain circumstances, into other forces that may be sensed by man.]
— from Joseph Smith as Scientist: A Contribution to Mormon Philosophy by John Andreas Widtsoe

A force under Colonel Cobbe in the vicinity was, with the greatest difficulty, extricated by General Manning, who left Bohotte at midnight on hearing of the disaster.
— from The Battles of the British Army Being a Popular Account of All the Principal Engagements During the Last Hundred Years by Robert Melvin Blackwood

Although intelligent management of labor is of the greatest value for the protection of the pelvic floor, under certain circumstances it may be impossible to preserve it intact; injury to it is the rule when the first child is born, and not unusual in later births.
— from The Prospective Mother, a Handbook for Women During Pregnancy by J. Morris (Josiah Morris) Slemons