TABLE or CONTENTS 
PAGE 
mXEODUCTORY NOTE 193 
PART I. 
General Characters of the LABOLaBExiACE^ 197 
Historical Su^imary ...,•... 199 
General Morphology axd Development 202 
The Spores. Their formation, mode of transference; and germination. Development of the 
foot; its modifications and function * • 202 
The Keceptacle. How it is characterized in general. Its simplest type and some of its 
modifications -^''^ 
Tire Appendages. The general structure, origin, and significance of the sterile and fertile 
forms -^ * 
The Male Sexual Organs. Their general character, relation to the appendages and 
systematic significance. Antheridia producing antherozoids (a) exogenously, and (b) 
endo^-enously. The two types of antheridia occurring in the latter category .... 209 
The simj)Ie antheridium. Its development, structure, and the production from it of 
antherozoids ; its variations in form ; its disposition on the appendages either 
definite or indefinite 211 
The compound antheridium. Its structure compared with that of tlie simple anthe- 
ridium ; the relative frequency of its occurrence ; its detailed structure as illustrated 
by the genus Dimeromyces ; variations of this type of structure in other genera; 
its more complicated form in Haplomyces and Cantharorayces 2U 
Eelation in position of the antheridia to the female organ and the probable existence 
of cross-fertilization : duration of the period of functional activity in either type . 216 
The antherozoids. Their exogenous or endogenous origin and mode of production in 
either case ; their cell characters and rate of discharge 216 
The Female Sexual Organs. Their origin and detailed development as illustrated by 
Stigniatomyces : they consist primarily of two superposed cells ; the primordial cells of 
the perithecium and of the procarpe, respectively. Development of the procarpe and 
young perithecium from these primordial cells ; their component parts, form, and rela- 
tionsr Fertilization of the trichogyne and the accompanying changes in the young peri- 
