146 
are as stable in their present form as are other fungi. Thus, saltants with 
short conidia (as M35 and M40) and saltants with broad conidia (M6 and 
M8) have been cultured and graphs of conidia repeatedly made, the sal- 
tant maintaining its character. For example, a determination of measure- 
ments of conidia of M35—made after several transfers and the lapse of 
some weeks—gave the following data: 
M o CV 
17.31 + .25 2.51 + .17 14.50 + 1.05 
Comparison of the above data with data of Graph 65, Fig. P, shows 
that this saltant not only remains far below H. No. 1 in length but is also 
constant. It is particularly to be noted that all comparative conidial meas- 
urements were made under standard conditions. Other characters ex- 
hibited by saltants, such as color, zonation, and aerial mycelium, are sim- 
larly permanent when strongly marked. Saltants are, however, subject 
to further saltation and indeed in some instances are exceptionally liable 
to it, for example, M26. Not all suspected examples of saltation afforded 
by variant sectors proved to be permanent in character, and some lost their 
distinguishing marks after one or a few transfers. Such instability was not 
observed in cases of conidial length and breadth, or of pronounced pale 
colony-color, but was more commonly noted in cases of slight differences of 
aerial mycelium, slightly pale color of colony, clumping, etc. While all cul- 
tures were carried, for convenience, on corn-meal agar, and their differences 
were observed on this medium, all that were studied critically were passed 
through other media—autoclaved wheat-shoots and live-wheat—to deter- 
mine whether such passage would alter the character of the saltant. The 
saltant characters were apparent on other media, as green-wheat agar or 
beef agar, though the general colony-character of both original and saltant 
was changed by the medium. After passage through these conditions, or 
through wheat, they were inoculated under standard conditions for all 
graphic comparisons. There is no evidence of alteration of the characters 
of the saltants by such procedure. In other words, the saltation is not a 
phenomenon associated with the medium and ended when the fungus gets 
back to its normal habitat. 
STABILITY OF THE SALTANTS THROUGH THE CONIDIA 
Dilution platings of conidia of well-marked saltants gave colonies all 
alike and with all the characters of the saltant, showing permanence of 
these characters through the conidia. 
