. r PROCEEDINGS OF THE AMERICAN ACADEMT. 



one enlarges and usually also the second or third 'Figures 29-37, 

 Plate 4 . From these, other cells are then produced by budding, 

 the lateral walls of which eventually adhere closely to those ad- 

 jacent, so that there comes to be from two to six large central cells 

 surrounded by a number of smaller ones, all filled with granular proto- 

 plasm, the only apparent difference being in their size. As they 

 mature, however, the inner and outer cells become markedly differ- 

 entiated. The former, which are large with conspicuously granular 

 contents and with numerous oil globules, secrete a thick hyaline wall, 

 while the latter, which become empty and spherical, adhere to each 

 their contents probably being absorbed by the central 

 cells . Plate 4 gh inal cell is usually the 



most prominent in producing the larger eenm yet one or both 



of the two a<i; - to their lateral 



growth a - like coil may even occasionally be produced 



by one or more of these second;; - 



gtheg rmi- 



narion, bulbils in differ t stages placed in \ an 



3 _ hem cells. In about twelve or : - g 1 cells of 



re immature — that perficial cells 



still contained protoplasm — began to send out vegetative branches, 



o from each . re 42, Plata 4 ral cells 



I to produce tubes at this 2 After about a 



month the mature fon: s begin germinate, - • ach 



hich 

 readily pi le the loosely adhering peripheral cells. The germ 



tubes or vegetal lnto 



short cells ollen with the protopl and 



more or less consir! e partiti> ns (Figure i 



. — The conidiophores of the so-called 



■iflium agari' Corda, var. d - . already 



red to, are invaria pure cultures, 



and as £ 



cone — of the . - i'late 



4, shows iumfructif onnected 



on t: ivpha. This phenomenon is of so frequent occur- 



eonidiophores are 

 ■;ta in wh 2 _ I y in 



number, commonly and frequently du The apex. 



e mature conidia i to oblong and rounded at both 



end- - considerably . - 'eing 



