Observations on Certain Parts of the Animal Oeconomy: Inclusive of Several Papers from the Philosophical Transactions, Etc

abdomen action anatomy animals appear arise arteries ascertain become birds blood body bones brain canal cavity cells cellular Cetacea chyle circumstances cold colour comb common comparative anatomy considered contraction degree digestion disease dissection ducts edge effect eggs epididymis examined experiments external female fish fluid fœtus gastric juice gizzard heart heat hermaphrodite hive Hunter inch insertion intestine John Hunter Journ kind lacteals ligament living lower lungs maggot male membrane mesentery mode motion muscles muscular fibres natural nearly nerves observed œconomy organ pass peculiar penis peritoneum pigmentum piked whale placenta porpoise posterior principle probably produced proportion quadrupeds quantity queen scrotum semen side similar skin species spermaceti stimulus stomach structure substance suppose surface takes place teeth tendon termination testicle testis tion torpedo tribe urethra uterus vas deferens vegetables veins vertebræ vesiculæ vesiculæ seminales vessels whole young