224 APPENDIX. 



round, partly oval or cylindrical, 3*5 5 p thick, the 

 cylindrical cells 10 20 times as long as they are thick. 

 The bud-colonies mostly consist of rows of cylindrical 

 cells, from the ends of which oval or round cells shoot 

 out. Spores form singly in roundish cells. They occur on 

 the mucous membrane of the mouth, especially of infants, 

 in greyish-white patches which consist of epithelium, 

 bacteria, yeasts, and the mycelia of various moulds. They 

 can be easily cultivated in a nutrient solution containing 

 sugar and ammonic tartrate.* The cells germinate accord- 

 ing to the richness of the fluid in sugar ; they either grow 

 into long threads, or, in a very strongly saccharine solution, 

 many daughter-cells are formed, budding out in various 

 directions (Plate XXIX., Fig. 3). 



Sacch. glutinis. Cells round, oval, or short 

 cylinders, 5 11 p, long, 4 p, wide, isolated, or united 

 in twos. Cell-membrane and contents are colourless in 

 the fresh state, but when dried and remoistened possess 

 a pale-reddish nucleus in the middle. Spore formation 

 unknown. Forms rose-coloured, slimy spots on starch, 

 paste, or on sterilised potatoes. The colouring matter 

 is not changed by acids or alkalies. 



Sacch. rosaceus (Pink Toruld). Cells 9 10 JJL 

 in diam. Forms a coral-pink growth in nutrient gelatine, 

 nutrient agar-agar (Plate XIII., Fig. 3), or on sterilised 

 potatoes (Plate X., Fig. 2). They are present in the 

 air. 



Sacch. niger (Black Torula}. Cells also present in 

 the air. Cultivated in nutrient gelatine they form a 

 black crust (Plate III., Fig. 3). 



MOULD-FUNGI OR HYPHOMYCETES. 



The mould-fungi have been divided into five orders :~|~ 

 Hypodermii, Phy corny cetes, Ascomycetes, Basidiomy cetes, and 



* Grawitz, Virch. Archiv, vol. 70. 



f Fliigge, Fermente u. Mikroparasiten. 1883. 



