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Sect XL] 



ZOOLOGY. 



377 



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and extracted by means of a small flattened stick through 

 the " foramen magnum/' and the soft parts cut away, it 

 may be simply dried, with the lower jaw and hyoid bone 

 attached^ and packed in branj sawdust, or dried sea-weed. 

 When the entire head of a duplicate mammal is pre- 

 served in strong spirit, for the examination of the brain 

 and organs of sense, a small portion of the cranium should 



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be removed, and the membranes of the brain carefully cut 



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to £rive the alcohol access to that organ. 



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The oesophagus and stomach should be preserved in 

 pirit or the solution No. I., with a portion of the duode- 

 num ; and the CcEcum, if any, with a sma.ll portion of the 

 ileum and colon. If the animal be not too large, it will 

 be preferable to cut ofl' from the mesentery the jejunum 

 and ileum, which (after their length and circumference 

 and the nature of their contents have been ascertained and 

 noted) may be thrown aw^ay, and then to strip down from 

 the spine the contents of the abdomen, beginning at the 



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diaphragm, so as to have the liver, stomach, spleen, pan- 

 creas, colon, &c., all with their attachments, taken out 

 together as low as the rectum, where it lies in the pelvis, 

 and, after being cleansed and the contents examined^ put 

 into spirits or solution No, I. 



The heart and lungs may be preserved together, or, if 



too large, the heart alone with the large blood-vesse 



The contents of the pelvis, viz., the bladder and rectum, 

 with the internal parts of generation, both male and 



female ; also the external parts, not separated from the 

 internal, with a large portion of the surrounding skin, 

 should be left attached in their natural state, and pre- 

 served in spirit or solution. 



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