... It isheld by some authorities to come from gru-gru, a Mandingo word for charm,but I respectfully question whether gru-gru has not come from ju-ju,the native approximation to the French joujou... 
Mary H. Kingsley 「Travels in West Africa」
...For this reason any attempt togive an average egg production for a breed is atbest only an approximation...
Harry M. Lamon 「Ducks and Geese」
...This approximation is a matter of amusement to some;but to the larger portion of mankind, I should say, it is a source ofdisgust...
R. Lee 「Anecdotes of the Habits and Instinct of Animals」
...It is at least an approximation to ascribe the primacy of realism toCourbet, though ascriptions of the kind are at best approximations...
W. C. Brownell 「French Art」
...This approximation tells us nothing as yet of the real distance of theorb of night...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...If weobserve all the eclipses in a period of eighteen years, or nineteenyears, then we can predict, with at least an approximation to the truth,all the future eclipses for many years...
Robert Stawell Ball 「The Story of the Heavens」
...It is still used for the first rough approximation tothe prediction of eclipses, and to calculate Easter...
Oliver Lodge 「Pioneers of Science」
...All that is given here is a firstrough approximation...
Oliver Lodge 「Pioneers of Science」
...What we can say is that the regioncontaining the visible stars has some approximation to a boundary...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
...The stars were knownto be inconceivably remote, but how far away no person could tell, nordid there exist any guide by which an approximation of their distancescould be arrived at...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...This,like the approximation to a particular latitude, must be regarded as anastronomical rather than a geographical relation...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...Remembering the range of difference in the basemeasures it might be supposed that the exactness of the approximation tothis ratio could not be determined very satisfactorily...
Richard A. Proctor 「Myths and Marvels of Astronomy」
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deceptively pulsating firs
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