...Selection may be followed either methodically and intentionally, or unconsciously and unintentionally... 
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...The several European breeds have so often been crossed, both intentionally and unintentionally, that, if any sterility ensued from such unions, it would certainly have been detected...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...None of these were complete, and they had the appearance of having been intentionally broken into small fragments...
L.W. King and H.R. Hall 「History Of Egypt, Chaldæa, Syria, Babylonia, And Assyria In The Light Of Recent Discovery」
...The fourth line seems to have been intentionally erased...
F. Haverfield 「Roman Britain in 1914」
...It may bethat this arching was not completely destroyed by the fire alone; nodoubt some that remained was intentionally removed to prepare the way for the new work...
Hubert C. Corlette 「Bell's Cathedrals: Chichester (1901)」
...Of course, he did so intentionally, when his ideas began tocrystallize and his plans for his future organization began to form...
Various 「Astounding Stories of Super-Science September 1930」
...The laboratory had intentionally been built in an isolated spot, but at the moment Tommy would have given a good deal for a few men nearby...
William Fitzgerald Jenkins 「The Fifth-Dimension Tube」
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