...Merolla says in 1682: "Cotton here is to be gathered in great abundance, and the shrubs it grows on are so prolific, that they never almost leave sprouting... 
Richard F. Burton 「Two Trips to Gorilla Land and the Cataracts of the Congo Volume 2」
... or of the prolific West India Islands? ...
William Still 「The Underground Railroad」
...The half-breeds are very prolific...
William T. Hornaday 「The Extermination of the American Bison」
...They are also very prolific, and I consider themthe coming cattle for our range cattle for the Northern climate, whilethe half and quarter breeds will be the animals for the more Southerndistrict...
William T. Hornaday 「The Extermination of the American Bison」
...As a species it ishardy and prolific, and of course its venison is as good as that ofany other deer...
William T. Hornaday 「Our Vanishing Wild Life」
...They are very prolific breeders, raising two broodsin a season, each set of eggs containing from tento twenty...
Chester A. Reed 「The Bird Book」
...The female is prolific, bringing forth from eight to twelve youngones, and Dr...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...They are not very prolific, there being only from two to four in a litter...
Elmer Harry Kreps 「Science of Trapping」
...The Chinese is the most prolific breed...
Harry M. Lamon 「Ducks and Geese」
...They were prolific, excellentnurses, tallowed well, and yielded good mutton...
Richard L. Allen 「Domestic Animals」
...It is of a beautifulsnowy plumage, is domestic and reared without difficulty,though not as prolific and hardy as the former...
Richard L. Allen 「Domestic Animals」
...Besidesthe black duck above described, several others, as the lightgray, the white duck, and some of the tufted, are prolific, hardy,and profitable...
Richard L. Allen 「Domestic Animals」
...They are prolific, and whenwell-fed, the ewes will frequently produce two lambs at a birth, forwhich they provide liberally from their udders till the time forweaning...
Robert Jennings 「Sheep, Swine, and Poultry」
...The plumage of all fowl related to them isincreased in brilliancy; and they are, moreover, very prolific, and theeggs are always enriched...
Robert Jennings 「Sheep, Swine, and Poultry」
...Guinea Pigs are very prolific, having about fivelitters a year, and from two to five at a litter...
A. C. Smith 「The Raising and Care of Guinea Pigs」
...So, nearly all who keep birds for their eggskeep fowls, which are the most prolific and most docile, and hens' eggsare the staple eggs in the markets...
John H. Robinson 「Our Domestic Birds」
...The swan is notpopular, because the birds are costly and are not prolific...
John H. Robinson 「Our Domestic Birds」
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