13 PROFESSOR RUTHERFORD. 



Examine preparations of injected kidney. 



44. Splee?i. Give every student a piece of fresh spleen of 

 ox and a portion of hardened spleen of cat. a, Examine cut 

 surface of fresh spleen to see pulp and splenic corpus- 

 cles, b, Draw out an artery, in order to see the corpuscles 

 better, c, Scrape the pulp away, in order to see the trabe- 

 culge. 



D 1. Section of hardened spleen. a, Examine in 

 glycerine, b, Remove the covering glass, and pencil 

 the section with a camel-hair brush in order to 

 remove blood-corpuscles and see adenoid tissue. 

 Mount in glycerine. 



45. Lymphatic gla7icls. 



D 1. Section of gland hardened in alcohol, a, Ex- 

 amine in glycerine, b, Pencil the section in order 

 to see adenoid tissue. Mount in glycerine. 



D 2. Chyle from thoracic duct. 

 Examine preparations of blood glands. 



46. Skin and epidermic appendages, 



D 1. V. S. skin of human finger hardened in chromic 



acid. Examine, and preserve in glycerine. 

 D 2. V. S. skin of cat hardened in chromic acid for 

 hair follicles, and erector muscle. Preserve in 

 glycerine. 

 D "6. V. S. fresh skin from back of sheep's head to see 



sebaceous glands. Add acetic acid. 

 D 4. Human hair. 

 D 5. Hair of sheep. 

 D 6. Hair of rabbit. 

 Show how to make transverse sections of hair imbedded in 

 gum. (See How to make sections of tissues.) 

 D 7. T. S. nail. 



D 8. Scales of moth or butterfly. Mount preparations 

 3 to T in Dammar or Canada balsam. 

 Examine preparations of injected and carminised skin, 

 Wagner's and Pacini's corpuscles, and various kinds of hair, 

 hoof, horn, feather. 



47. Eye. 



D 1. Section of lens of ox boiled for five to ten minutes 

 in dilute sulphuric acid 1 per cent, in order to see 

 fibres. Dissect with needles. Examine, and pre- 

 serve in glycerine. 



D 2. Section across fibres of lens of ox hardened in 

 spirit for three days. 



D 3. V. S. cornea of cat hardened in chromic acid. 

 Mount in glycerine, 



