...The mind of the operator is electrically connectedto the mind of the victim... 
Various 「Astounding Stories, August, 1931」
...It formed nopart of our original game to steal your dispatch-box; that Iconsider a simple and elementary trick unworthy the skill of apractised operator...
Grant Allen 「An African Millionaire」
...The operator stands in the boat and plunges the animal overthe side, when the washing is performed...
Richard L. Allen 「Domestic Animals」
...Most inventors of "worm pills" andthe like order castor oil to be given after their boluses,a terrible aggravation both to operator and patient...
Mrs. Leslie Williams 「A Manual of Toy Dogs」
...The point being selected, the instrument is pushed gentlyinto the flesh; and when the operator feels no resistance is offered tothe progress of the tube, he knows the cavity has been pierced...
Dinks, Mayhew, and Hutchinson 「The Dog」
...There must beno forbearance in the application of the ligature, but the degree oftension must be regulated only by the strength of the operator...
Dinks, Mayhew, and Hutchinson 「The Dog」
...Even should the proprietor be silent, the reputation ofthe operator will be injured; for, when the knife is resorted to, mankindwill not tolerate failure...
Dinks, Mayhew, and Hutchinson 「The Dog」
...Thecatheter then glides forward, and the operator, resigning the hold of thepenis to his assistant, passes his free hand to the perinæum...
Dinks, Mayhew, and Hutchinson 「The Dog」
...The operator must not be impatient, for thestream is perfectly passive; since, in consequence of the distension, thebladder has lost its contractive power...
Dinks, Mayhew, and Hutchinson 「The Dog」
...On this occasionthe rounding is carried still deeper, the operator being resolved theknife this time shall take effect...
Dinks, Mayhew, and Hutchinson 「The Dog」
...The operator then takes a straightprobe-pointed bistoury, and having introduced it into the orifice, bymaking only pressure, instantly divides the sac...
Dinks, Mayhew, and Hutchinson 「The Dog」
...An assistant,whose hands, like those of the operator, have been dipped in the sublimatesolution, may press his hands on the wound behind the knife to prevent theprotrusion of the intestines...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The success of the operation depends chiefly on the skill of the operator, butnot alone in the selection and use of the appliances, for as much attentionmust be given to subsequent management...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...By thismethod the operator grasps the bird firmly in the left hand with thethumb and fingers about the neck and the breast and wing, butts heldsecurely in the hand...
Carl Dare 「Profitable Squab Breeding」
...The operator is nearly always alone, even when theprize is a large one, like the Common Snail, Helix aspersa...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
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