Page 378 - My FlipBook

350 THE MICRO-ORGANISMS OF THE HUMAN MOUTH.

have been found, on the other hand, to be the canse of a large
nnniber of devastating diseases of plants, vegetables, and cereals,
as well as of various diseases of fishes and insects. Several species
of Aspergilhis and Mncor have proved pathogenic to mammals.

Fig. 127.

Cyclus of Developmext op the FUxVGUS Pexicillium glaucum. c, bud-
a, spores; b,
ding of the spores (b after 24, c after 36 hours).
500 : 1. d, appearance of the mycelium after
48hours, low power (75 : 1) ; m, a small piece of the mycelium after .3-5 days, carrying a branched
500 : 1.
fruit-hypha e, on whose extremities the spores are being thrown oft".
while -mould-fungi have also been shown to be the cause of a
number of cutaneous diseases in man. Mould-fungi, especially
Oidium lactis (milk-mould), are frequently met with in the
human oral cavity. The latter fungus is almost always found