[1] 66 COLOURLESS PLANT-CELLS 



Yeast (Saccharomyces Cerevisice). 



A. Yeast cell under high power, shewing the cell-wall, the protoplasm, and the vacuoles. Run in iodine 

 solution ; the protoplasm and cell-wall are stained brown, and are seen more clearly. 



[NOTE. In the yeast cell the large central vacuole is contained within the nucleus, most of the chromatin of 

 which is situated at one end of the vacuole and closely applied to it. These relations, which are quite exceptional 

 in plant -cells, cannot be clearly seen except in stained specimens prepared by special methods.] 



B. Yeast cells in different stages of budding. . 



