978 SEC. 18. BIOLOGY. 



spots, especial!}' at the point of transition from the small intestines to 

 the large, are remarkable. 



No. 14. The end of the rectum of a cow that has died of the cattle disease, 

 opened and seen inside. The folds of a black colour, and the consider- 

 able swelling and redness of the mucous membrane are remarkable. 



No. 15. A piece of the skin of a cow that has died of the cattle disease, 

 taken from the inner surface of the leg. Grey crusts covering the 

 diseased parts of the skin, and between these the fissures in the true 

 skin, are to be noticed. 



3819. Skull of Sheep (Ovis arics}. The bones have been 

 disarticulated and mounted in segments, according to their mor- 

 phological relations, so that each segment may be removed for 

 lecture purposes. E. T. Newton, Museum of Practical Geology. 



The following is the' order in which the bones are grouped : 

 BRAIN CASE. 1st Segment. Basioccipital ankylosed, with two exoccipitals 

 supraoccipital. 



2nd Segment. Basisphenoid ankylosed with two alisphenoids ; two 



ankylosed parietals. 

 3rd Segment. Fresphenoid ankylosed, with two orbitosphenoids ; two 



frontals. 

 NASAL REGION. Mesethmoid ankylosed, with two superior and two 



middle turbinals and vomer ; two free nasals. 



AUDITORY REGION. Right side. Squarnosal, tympanic, and periotic 

 mass. (The periotic bones being ankylosed.) 

 Left side. Ditto ditto. 



FACIAL REGION. 1. The two premaxillse. 



2. Right side. Maxilla, jugal, lachrymal, and inferior turbinal. 



3. Left side. Ditto ditto. 



4. Right side. Palatine and pterygoid. 



5. Left side. Ditto ditto. 



FIRST VISCERAL ARCH. Right side. Ramus of lower jaw and malleus. 



(The latter, for convenience, is mounted separately). 



Left side. Ditto ditto. 



SECOND VISCERAL ARCH. The hyoid, consisting of basihyal, two 



ceratohyals, two epihyals, two stylohyals, and two tympanohyals. 



(One of the tympanohyals is left attached to the tympanic bone). 



The two thyrohyals belong to the third visceral arch, but are mounted 



here for convenience. 



The incus and stapes of each side are mounted separately on account 



of their small size; the former belongs to the second visceral arch, 



and the latter is most probably a part of the auditory capsule. 



3820a. Collection of Entomological Preparations for the 



Microscope, comprising dissections of insects and whole insects, 

 mounted in Canada balsam. Frederic Enoch. 



Some of these preparations are mounted in a deep cell, and by being treated 

 in a peculiar manner their natural form is preserved, and the internal structure 

 of muscles and tracheae seen in their natural positions. 



3821. Objects exhibited by Professor Moser. 



The geometrical and perspective drawings, I., II., and III., represent an 

 apparatus for the determination of the products of the respiration and per- 

 spiration of animals. The apparatus is arranged at the I. R. Chemico- 

 Agricultural Experimental Institution at Vienna, for experiments on horses, 



