Contents. ix 



LECTURE XIII. 



PENICJLLIUM GLAUCUM. 



Mycelium of blue mould Conidiophores and conidia Origin of ascospores 

 Enzymes of Penicillium Action on tartaric acid Respiratory ratio 



pages 97-103 



LECTURE XIV. 

 Fucus PLATYCARPUS. 



General appearance and histology of Fucus Apical growth Its sources of 

 food Its reproductive cells Antheridia and oogonia Origin of sexual 

 reproduction Fertilisation -The nucleus contains the germ-plasm 



pages 104-112 



LECTURE XV. 



POL YSIPHONIA FA S TIG I A TA . 



Structure of Polysiphonia Microscopic reconstruction Apical growth 

 Protoplasmic connections Manner of nutrition Life-history Origin 

 of tetraspores Germination Sexual plants Antheridia and procarps 

 Ovum or carpogonium Fertilisation Auxiliary cell Carpospores 

 Relation of tetrasporic to carposporic plants Alternation of generations 



pages 113-120 



LECTURE XVI. 



MARCHANTIA POLYMORPHA. 



Origin of land-plants External appearance of plants of Marchantia Minute 

 structure of the thallus Connection between death and reproduction 

 Reproduction by means of gemmae ... . . . pages 121-127 



LECTURE XVII. 



MARCHANTIA POLYMORPHA. 



Sexual reproduction Male and female plants Antheridiophore Libera- 

 tion of sperms Archegoniophore Passage of sperms to archegonia 

 Oosperm Development of embryo Spore-capsule Liberation and 

 germination of spores Life-history Gametophyte and sporophyte 



pages 128-134 



LECTURE XVIII. 



FUN ARIA HYGROMETRICA. 



Protonema, leafy plant and sporangium Male and female branches 

 Antheridia and archegonia Fertilisation Development of oosperm 

 Theca Calyptra Shedding of spores Sporophyte and gametophyte 

 Comparison of alternation of generations in Polysiphonia, Marchantia 

 and Funaria pages 135-145 



