The Farm-poultry . e anintruder away before I could get out. The bell, relay and switch may be obtained,mounted and wired on one base, with bindingposts to connect wires to, simplifying thewiring considerably. 1 switch $ 15 1 door spring 15 2 window springs 30 ibell 60 1 relay 90 3 cells battery 1 35 No. 18 annunciator wire <I0 250 ft. No. 14 bare copper 1 SO Double pointed tacks, tape and insulators 20 Total, $6 05 Yarmouth, Me. E. S. Tabek. ARTIFICIAL INCUBATION. What the Microscope Teaches—Biology for Poultrymen. By E. C. HUFFAKEK, C. E. (Conlluued from page 15ti. April 1st). Let us in t
The Farm-poultry . e anintruder away before I could get out. The bell, relay and switch may be obtained,mounted and wired on one base, with bindingposts to connect wires to, simplifying thewiring considerably. 1 switch $ 15 1 door spring 15 2 window springs 30 ibell 60 1 relay 90 3 cells battery 1 35 No. 18 annunciator wire <I0 250 ft. No. 14 bare copper 1 SO Double pointed tacks, tape and insulators 20 Total, $6 05 Yarmouth, Me. E. S. Tabek. ARTIFICIAL INCUBATION. What the Microscope Teaches—Biology for Poultrymen. By E. C. HUFFAKEK, C. E. (Conlluued from page 15ti. April 1st). Let us in the last place see what the micro-scope reveals. I think there is a vague notion abroad that achick is a chirk from the outset; a very smallchick, but still a chick, with a body, wings,legs, eyes, organs all complete, and that theprocess of development is one of , however, could be further from thetruth; the germ at first bears no resemblancewhatever to a chick. Conceive instead that in the beginning. Typical cell division, showing Uie distribution of chromatin. (FromParker, after Carnoy). A—C, arrangements of the chromatin In threads:I)—E. formation of tlie chromatin rods and loops: F. splitting of the loops;G—H, retraction of the chromatin into the two daughter cells. the germ consists of a single nucleated cellimbedded in the upper surface of the form is not that of the cell of the honeybee, but a sphere or spheroid somewhatsimilar in outline to the egg in which it isfound. Within this cell is a black coiled ortangled thread called chromatin, shown insection at A in Fig. 9. Chromatin is simplythe name of a substance of whose nature wemay be said to know nothing, except that Insome way it lies at the basis of all livingtissues. The course of development is shown in thesucceeding figures, B, C, D, E, F, G, H. In B, the chromatin thread is becomingentangled, and the short filaments of chroma-tin above and below the principal mass in A,
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectpoultry, bookyear1901
