Note. 
603 
A water preparation was made about noon on Wednesday, retained in a moist 
condition and re-examined four and a half hours later. It was then noted that 
a moiety of protoplasm remaining in the lower end of a cell situated at the sporo- 
genous tip of a mature conidiophore had not rounded itself off in the usual manner, 
but showed marked pseudopodial elongations of its naked surface, one such lobe 
having penetrated the membrane of the parental cell (Fig. i). 1 The adjacent cell 
in the conidiophore was minutely vacuolate and perfectly normal in appearance. The 
lower portion of the free protoplasm in the injured cell contained a number of minute 
granules and a few small vacuoles. At the naked growing surface the protoplasm 
was homogeneous. The lobular prolongations were clear and definite, and, with the 
exception that no trace of a streaming movement could be detected, bore a striking 
resemblance to those of an Amoeba. The structure was unmistakably a pseudo¬ 
podial growth of a naked surface of protoplasm. By noon the following day the 
protoplast had increased to about twice its original bulk, and the irregularly-lobed 
pseudopodia were very marked, several having pierced the parental sheath (Fig. 2). 
Many more minute vacuoles were present in the lower region, whilst along the middle 
of the lobes and scattered generally through the substance of the protoplasm were 
large numbers of very fine granules. The edges of the lobes were hyaline and homo¬ 
geneous. The preparation was again examined at 2.20 p.m. on Friday, when the 
facies of the specimen was found to have completely changed (Fig. 3). The 
irregularly-lobed naked pseudopodia had become smoothly digitiform, and were 
enclosed in thin but quite definite cell-membranes which extended down to the wall 
of the adjoining cell. In one of the processes a fine transverse septum was visible, 
and the entire structure merely formed a cluster of minute and delicate radiating 
hyphae arising in an injured conidiophore. By 10 a m. the following day the three 
1 The drawings were made with a Zeiss camera lucida; and Swift one-eighth objective NAO. 92 
with No. 8 compensating ocula were used. They have been reduced to one-half. 
R r 
