CATALOGUE. 



OSTEOLOGY. 



SYSTEMS OF THE SKELETON. 



1. A Human os sacrum, as an example of the vertebral system of bones, called 



the internal skeleton, or ' endo-skeleton.' Hunterian. 



2. A bony ganoid plate of a Sturgeon (Acipenser Sturio), as an example of the 



dermal system of bones, called the external skeleton, or ' cxo-skeleton.' 



Hunterian. 



3. The osseous tessellated carapace of an Armadillo (Da*ypug miHutus), as an example 



of an exo-skeleton. Presented by Charles Darwin, Esq., F.R.S. 



4. The bone of the heart of a Bullock (Bos Taurus), as an example of the visceral 



system of bones, or ' splanchno-skeleton.' Purchased. 



5. The bony sclerotic of the Sun-fish (Orthayorucus Mold), as an example of the 



same system of bones. Hunterian. 



CONSTITUENTS OF OSSEOUS TISSUE. 



6. The shaft of the femur of an Ostrich (Strulhio Camelus), which has been steeped 



in dilute acid in order to remove the earthy salts ; the animal or gelatinous 



B 



