24 - HISTOLOGY. 



40. Stratified Epithelium. Scrape the inside of your cheek with the handle of a 

 scalpel and examine in 0-9 per cent NaCl solution. Make drawings of the epithelial cells 

 showing the nuclei. 



41. Pigment Cells. Spread out a piece of toad's skin on a slide and examine it in 

 0-65 per cent NaCl solution under the high power. Draw the pigment cells. 





42. Skin. Examine the prepared section of toad's skin, stained with haematoxylin. 

 Make drawings to show : horny and Malpighian layers of epidermis ; dermis ; pigment 

 cells ; saccular glands ; connective tissue ; blood-vessels. 



