164 PRACTICAL HISTOLOGY [XX 



fat globules in their cells. To observe these the gland should be 

 preserved in osmic acid or in Flemming's fluid, cut frozen, the 

 sections mounted in glycerine. 



The cells of the membrana propria (basket cells) will be seen in 

 teased portions of a piece of gland which has been left in water 1 to 2 

 days. 



For isolating serous cells 5 p.c. chloral hydrate may be used. 



