...A denning aggregation of the western cottonmouth... 
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Anoplura: wingless species without metamorphosis,habits epizoötic, thoracic segments similarly developed: acomposite aggregation which includes both the biting and suckinglice...
John. B. Smith 「Explanation of Terms Used in Entomology」
...During the evening ofJune1, for instance, some 75 Caribou in a loose aggregation werefeeding over the summit of Josie’s Hill, beyond the junction of Windyand South bays...
Francis Harper 「The Barren Ground Caribou of Keewatin」
...This explanation appears all the more probable because one would naturally expect that flocks of meteors would abound in a close aggregation of stars...
Garrett Serviss 「Curiosities of the Sky」
...” Ifthe aggregation be greater still and more extended, we shall have a shadedarea—a “sea...
E. Walter Maunder 「Are the Planets Inhabited?」
...We have already referred to this glorious aggregation ofstars as one of the three especially interesting objects in the heavens...
Robert Stawell Ball 「The Story of the Heavens」
... To be impious, and irrational, at the same time, is to make, by the aggregation of discrepant qualities, a mere chimera of the God we adore...
Paul Henri Thiery (Baron D'Holbach) Samuel Wilkinson 「The System of Nature, Volume 2」
...In fact, the whole region withinthe triangle formed by stars γ, κ and β is full ofnebulous double and multiple stars, whose aggregation in this region Ido not consider wholly accidental...
Richard A. Proctor 「Half-hours with the Telescope」
...To the smallest telescope this aggregation ofstars, ranging in magnitude from six and a half to fourteen,and grouped about two neighboring centers, presentsa marvelous appearance...
Garrett Serviss 「Pleasures of the telescope」
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