130 GENERAL BIOLOGY. 



by the union of numerous smaller 

 ducts from the different lobes of 

 the pancreas. 



(bb) The gall-bladder and the common 



bile-duct. The gall-bladder lies 



posterior to one of the lobes of the 



right side of the liver. Its duct 



unites with a duct from each lobe 



of the liver to form the common 



bile - duct, which opens into the 



duodenum close to the pylorus. 



(6) Eemove the intestine (for directions see 



the next following italicized paragraph) 



and unravel and identify its different 



parts. Diagrams ! In taking out the 



intestine note the attachment of the 



mesentery to the intestine and to the 



body -wall. Compare its extent in one 



of these regions with its extent in the 



other. 



To remove the intestine cut above the ligature on 

 'the oesophagus and between the double ligatures. 

 Ligature any large vein that it is needful to 

 cut through. Be careful not to injure the repro- 

 ductive organs. 



Remove the eyes, carefully t with the muscles and 

 put tliem into formic aldehyde solution ( 1 to 2 

 per cent.). 

 Skin the head t ligature the vessels of the neck, 



