The Farm-poultry . f allair.«, and should1)6 met at once by dejiletic medicines, or itwill probably he followed liy the loss of thebird. Let us now consider the egg itself, which isa much more complicated organism than manypeople are aware of. There is much even inthe shell, S (Iig. 3) to excite our interest. Itis composed chiefly of prismatic particles, soarranged as to leave pores or interspacesbetween them. As laid, the shell is of enor-mous strength, so tliat it will resist great pres-sure between the palms of the hands appliedto the opposite ends; though it is not correctthat, as we have
The Farm-poultry . f allair.«, and should1)6 met at once by dejiletic medicines, or itwill probably he followed liy the loss of thebird. Let us now consider the egg itself, which isa much more complicated organism than manypeople are aware of. There is much even inthe shell, S (Iig. 3) to excite our interest. Itis composed chiefly of prismatic particles, soarranged as to leave pores or interspacesbetween them. As laid, the shell is of enor-mous strength, so tliat it will resist great pres-sure between the palms of the hands appliedto the opposite ends; though it is not correctthat, as we have seen stated, the strongestman cannot l)reak it in this way. Still, foiits thickness and texture, its strength is phe-nomenal. As hatching [iroceeds, however,the carbonic acid and dioxide formed by thebreathing of the (diick, dissolved in fluid,gradually dissolve a portion of the material,and thus the prismatic bodies are slowlysoftened and disintegrated. The shell thusbecouus far .-ofter and more brittle as hatch-. FiR. ;!. OF AN , HIastodt i iii. W Y, M hite Yolk. Y Y, Yellovv Yolk. V, Vitelline Mem-braiif. F, t very fluid Albiimcu rounU tlie Vitelline Membrane. I>,DtiisiAlhumeu uuclusiiig the Yolk with preoediiig envelopes. lu this envelopeDare Incoiporalcd the ends of C II, the Chalazia. W, Hudy of the ,Somewhat denser layer of Albumen, surrounded by a fluid layer. M Ml,Ouli aud Inner sliell menit)ranc, separated at A, Air Cliamber. S, Shell. Ing approaches; and so great is the diflerence,that if the edge of a fracture made across afresh egg shell, and another of one hatched orbatching, be examined under a microscope, itwill lie instantly seen that the two are in aquite ditVeient molecular condition. Were itnot for this beautiful provision of nature, thechick could never break the shell. The outer and inner shell membranes, M audMl, separating at the air chamber. A, need nofurther explanation. Proceeding inwards, wecome next to the white or
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectpoultrynortheasterns
