...It would be a sort of Robinson Crusoe life, but with abundant materialsfor surrounding oneself with comforts, and improving the improvableamong the natives... 
David Livingstone 「The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death, Volume II (of 2), 1869-1873」
... The weather has been cooler for two days, and the fever-patients are fast improving...
Horatio Bridge 「Journal of an African Cruiser」
... But, to meet for the purpose of improving the mind and heart, by learning to read the sacred scriptures, was esteemed a most dangerous nuisance, to be instantly stopped...
Frederick Douglass 「My Bondage and My Freedom」
...The averageperson going to work becomes a regular machine, never giving thematter of improving the methods of his work a thought...
Booker T. Washington 「The Future of the American Negro」
...This breed is nearly extinct, having been crossedsuccessively by the Chinese and other good breeds, thus diminishingthe size and materially improving its thrift and tendencyto fattening...
Richard L. Allen 「Domestic Animals」
...—It is only within a very recent period,that the mode of improving live-stock by skilful breeding, has beenproperly attended to...
Ambrose Blacklock 「A Treatise on Sheep:」
...And so, with the thoughtlessly cruelcunning of a schoolboy, he had devised a means of improving upon this...
A. J. Dawson 「Finn The Wolfhound」
... does not improving one's mind but render one more meet for suffering? Of what avail is the torment of learning to the derelicts of life? ...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
...On its return, it sees a crack, representing in its eyes a bad join which it had overlooked; it completes its actual task by improving the join...
J. Henri Fabre Alexander Teixeira de Mattos 「The Mason-bees」
...Her successors also benefited by it, especially after improving it...
J. Henri Fabre 「Bramble-bees and Others」
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