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threads arranged parallelly to one another, it can be easily 

 separated from the internal mass, in which it differs totally from 

 the genera Rhizopogon and Melanogaster, where the peridium is 

 in organic connection with the subjacent tissiie. Mr. Berkeley 

 was the first to make known the true structure and mode of 

 fruiting in Trichogasters. In the fourth volume of the " Annals 

 of Natural History " he says : " If a young plant of Lycoperdon 

 coelatum be cut through it will be found to consist of a fleshy mass, 

 perforated in every dii'cction with minute, elongated, anastomising 

 Cavities, the outer siirface of which is composed of pellucid, obtuse 

 tells, placed parallel to one another, exactly as in the hymenium of 

 an Agaric ; at a later stage little spicules are developed at the tips 

 of these cells, on each of which a globose spore is seated ; as the 

 plant ripens these spores fall off and become the dusty mass which 

 one sees in PufFballs. The cells which produced the spores then 

 collapse and are dissolved." M. Tulasne says, Fungi hypogoei, p. 

 10, as soon as the spores are ripe, and have fallen off, the tissue 

 which composed the walls of the cavities is disorganized, and gives 

 place to long, continuous, and dark filaments implanted in the 

 whole internal peridium, and which collectively are termed the 

 capillitium. A similar structure has been observed in Geaster, 

 Scleroderma, and Polysaccum. In Phallus and Clathrus the only 

 difference is that the walls of the fertile cells, at first cartilaginous, 

 instead of being converted into a capillitium, are resolved into a 

 semi-fluid pulp, which is eventually washed into the ground by rain, 

 &c. In Hymenogastreoe the division of the fertile mass, or gleba, 

 into cavities is permanent, existing till the dissolution of the 

 fungus. The gleba varies in its nature ; it may be fleshy, corky, 

 or cartilaginous, but it is alw-ays more firm than in Lycoperdineoe ; 

 it ditfei's also in the form of the cells which constitute its substance, 

 sometimes they are capillary threads, oftener there is a mixture of 

 rounded and elongated cells ; the cohesion of the threads may be 

 equal throughout the mass of the walls, which are then indivisible 

 and equally pellucid, or they may be denser towards the centre of 

 the divisions, which then presents the appearance of a dark line. 

 In all these cases there exists a close analogy between these septa 

 and the gills of an Agaric. Perhaps enough has been said to 



