. Domesticated trout [microform] : how to breed and grow them. Fish culture; Trout; Pisciculture; Truite. Hi!i HATCHING THE EGGS. 133. These plates represent eggs of the Coregonus palta in differ- ent stages c^ heir growth, as seen under a powerful magai^". No. 15 n ' sents a spoiled egg. No. 20. 't.''-". embryo ten days old. No. 33. Front view of embryo eighteen days old. No. 99. An egg two days after impregnation. No. loi. Appearance of first furrow second day after impreg- nation. No. 102. An egg showing development of furrows. No. 107. Mulberry form of the embryo. No. 109. Embryo
. Domesticated trout [microform] : how to breed and grow them. Fish culture; Trout; Pisciculture; Truite. Hi!i HATCHING THE EGGS. 133. These plates represent eggs of the Coregonus palta in differ- ent stages c^ heir growth, as seen under a powerful magai^". No. 15 n ' sents a spoiled egg. No. 20. 't.''-". embryo ten days old. No. 33. Front view of embryo eighteen days old. No. 99. An egg two days after impregnation. No. loi. Appearance of first furrow second day after impreg- nation. No. 102. An egg showing development of furrows. No. 107. Mulberry form of the embryo. No. 109. Embryonic germ immediately after the disappearance of the furrows. No. 125. Projection of the embryo prepared with acid, 8th day. No. 133. Projection of embryo prepared with acid, 17th day. The letters denote as follows : — a Shelly membrane ; b Yolk ; c Germinal vesicle: d Yolk globules; e Oil drops ; / Albumen ; g Yolk membrane ; h Yolk vesicle ; i Head of the em- bryo ;'y Yolk cavity; k Trunk of embryo; I Tail; w Dorsal keel; « Dor- sal furrow; o Ocular lobes ; / Dorsal cord ; q Vertebral divisions : r Sheath of dorsal cord ; s Cephalic bow ; t Nuchal bow ; ti Trunchal bow ; v Epider- moidal stratum ; x Procencephalon ; y Mesencephalon; z Epencephalon. As too much caution cannot be observed in trout- culture, I hope the reader will pardon my repeating here the cautions already given : — To keep the covers down carefully; t To change the filters when dirty ; To take out every dead egg once in twenty-four hours ; To use the watering-pot freely, if sediment settles on the eggs ; To guard everywhere against fungus. Transpor-^ation and Packing of the Eggs. Transportation of the eggs. No one need have any fear about being able to transport trout eggs saieiy* ii. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original St
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherbosto, bookyear1872
