...They grow by preference in connective tissue andare quite vascular... 
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
..." These are ofsizes varying from peas to pigeon eggs, are roundish and translucent, andsurrounded by a delicate, vascular membrane...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Singularlyenough, the nervous, vascular, and respiratory systems (tracheæ) arewanting, and the alimentary canal is a blind sac, remaining in anindifferent, or unorganized state...
Alpheus Spring Packard 「Our Common Insects」
...Theanterior continuation of the principal vein which runs on the ventral wall ofthe gill-gut, and gives off these vascular arches upwards, is the branchialartery (ka)...
Ernst Haeckel 「The Evolution of Man」
...Between the foursecondary germinal layers and the structures formed from them there is formedembryonic connective matter with stellate cells and vascular structures(Hertwig’s “mesenchym”)...
Ernst Haeckel 「The Evolution of Man」
...In the end,the whole of the yelk-sac is covered with a vascular net-work...
Ernst Haeckel 「The Evolution of Man」
...But, however important the vascular system may be to the more advanced andlarger and highly-differentiated animals, it is not at all so indispensable anelement of animal life as is commonly supposed...
Ernst Haeckel 「The Evolution of Man」
...As we have seen, the Amphioxus has no real heart; itscolourless blood is driven along in its vascular system by the principal vesselitself, which contracts regularly in its whole length (cf...
Ernst Haeckel 「The Evolution of Man」
...The further phylogenetic evolution of the vascular system is revealed to us bythe comparative anatomy of the Craniotes...
Ernst Haeckel 「The Evolution of Man」
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concatenation bones steels
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