APPENDIX C 531 



Morchella (the Morel), a native Fungus of variable occurrence, 

 found especially upon soil which has been burnt (p. 471). 



*J/wcor, various moulds of this genus are found growing on 

 organic substrata, and may be readily obtained on wet bread, or 

 dung kept under a bell-glass (p. 497) : should be used fresh. 



Navicula, a very common genus of Diatoms, found in fresh- 

 water, and capable of slow movement (p. 449). 



Nettle (see Urtica). 



Nitella, sp. : plants of this genus are common in fresh-water : 

 fresh or in spirit, 409, &c. 



*Nostoc, a dark olive-coloured gelatinous Alga, belonging to the 

 CyanophycesB : commonly to be found on lawns, and among moss : 

 swelling greatly with water, it often comes first into notice after 

 rain (p. 451). : should be hardened in alcohol for use. 



Nymphcea alba, native white Water-Lily : leaf, 139. 



Nupliar lutea, native yellow Water-Lily : leaf, 1 39. 



Oak (see Quercus). 



*(Edogonium t a genus of green filamentous Algae, growing at- 

 tached to stones, or submerged plants in fresh- water: to be 

 recognized by the peculiar intercalary growth, and the irregular 

 thickness of the filaments (p. 421). 



Oranges (see Citrus). 



*0scillatoria, a genus of blue-green filamentous Algse, commonly 

 to be found growing on moist soil, stones, &c. (p. 452). 



Pandorina Morum, a green Alga, consisting of a motile spheri- 

 cal colony of sixteen cells : not uncommon in ponds : should be 

 observed while actively living (p. 439). 



*Parmelia parietina, the common yellow Lichen, found on walls, 

 roofs, rocks, &c. : may be dried for subsequent use (p. 473). 



Pelargonium, or Scarlet Geranium : petals, fresh, 198 ; leaf, 

 or stem, fresh, 146. 



*Pellia epiphylla, a common native Liverwort : thallus, 362 ; 

 antheridia, 371 ; sporogonium, 377. 



Peltigera canina, a common Foliaceous Lichen, which grows on 

 a mossy substratum (p. 479). 



Penicillium, the common blue mould, 490. 



Peperomia : various species, which are grown in botanic gardens 

 will do ; leaf, fresh, 139. 



M M 2 



