I cannot here give the details which I have collected and elsewhere published on this curious subject; but to show how singular the laws are which determine the reproduction of animals under confinement, I may mention that carnivorous animals, even from the tropics, breed in this country pretty freely under confinement, with the exception of the plantigrades or bear family, which seldom produce young;
Ezin ditut hemen eman kontu bitxi honez bildu eta beste leku batean argitaratu ditudan xehetasunak; baina hesipeko egoeran animalien ugaltzea determinatzen duten legeak zein bitxiak diren frogatzeko, seinala dezaket ugaztun haragijaleak, tropikoetakoak berak ere, nahiko ongi umatzen direla gure herrian, plantigradoak edo hartzen familia izan ezik, hauek oso bakanki baino ez baitute kumerik egiten;