. Artificial incubation and incubators ... re—when the young ducks burst their shells, and theshed teems with life . 64 REAUMUR S APPARATUS. There is but little doubt that part, and that perhaps the princi-pal portion, of the hatching process was kept from the sight ofthese narrators, for it is exceedingly improbable that any processso directly antagonistic to the natural system could be success-fully carried out. Doubtless there was some unseen means ofkeeping the eggs warm, as it is impossible that the egg should ^ofitself possess sufficient heat to sustain life, much less develop it. REAUMU
. Artificial incubation and incubators ... re—when the young ducks burst their shells, and theshed teems with life . 64 REAUMUR S APPARATUS. There is but little doubt that part, and that perhaps the princi-pal portion, of the hatching process was kept from the sight ofthese narrators, for it is exceedingly improbable that any processso directly antagonistic to the natural system could be success-fully carried out. Doubtless there was some unseen means ofkeeping the eggs warm, as it is impossible that the egg should ^ofitself possess sufficient heat to sustain life, much less develop it. REAUMURS HATCHING APPARATUS. No further record of any invention for artificial hatching comesto our notice until the year 1777, when Reaumur, the celebratedFrench naturalist, constructed his apparatus for hatching bymeans of horse manure, except a little portable oven describedby Oliver de Serres, a noted French agriculturist, as being heatedby four lamps and the eggs covered with feathers. Of the dateof this, however, we have no knowledge. F. FIG. 49.—AMERICAN EGG HATCHING MACHINE. Reaumurs apparatus was quite successful in the hands of thenaturalist, but with others it did not do as well, probably owingto lack of attention and knowledge of the requisite care. Hisapparatus was simply wooden casks fitted with drawers or mova-ble shelves, on which the eggs were placed, the whole surroundedwith fresh horse manure, which was renewed at intervals to keepup the heat. BONNEMAINS INCUBATOR. The next invention we find is that of M. Bonnemain, who wasthe first to use hot water to warm the eggs. Fig. 48 is a sectionalview of his machine, in which a represents the boiler; b the box BONNEMAIN S INCUBATOR. 65 or room in which the heating apparatus is placed; d the tubes forcirculating the hot water; e the funnel end of the supply tube;and / an exhaust pipe to carry off the steam should the water gettoo hot: c is a box through which passes an extension of the lowercoil of pipe, under the retur
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectincubat, bookyear1883
