INTRODUCTION. xiii 



The Root, whether tapering, bulbous, compreffed, or of what other 

 figure ; note the colour and confiftance of the fibres, and to what they 

 adhere; whether the root produces one fingle ftem, or more than one ; 

 and if more how many : fay in what fituation it grows, and at what feafon. 

 Note, whether it be furnifhed with a volva, and if there is a volva, fay 

 of what fize, figure, texture, colour and duration ; if it perifhes and dis- 

 appears before the other parts, fay how, and at what age of the plant : — 

 under this head, note alfo, the duration of the plant, whether it fprings 

 up and perifhes in the fpace of a few hours, in one or two days, or whe- 

 ther it abides for weeks. 



Of the Stem fivy, whether upright or leaning ; if leaning, whether in 

 a regular curve, or crooked in various directions ; whether hard and firm 

 on being preifed between the fingers ; or freely yielding to a gentle pref- 

 fure ; whether folid, and of the fame fubflance throughout, or Jijiular, 

 hollow within ; whether eafily dividing in filaments, or of a brittle fpongy 

 fubftance, not divifible in filaments ; fay, how thick, how tall, of what 

 colour both within and without. 



If there be a Curtain, fay, at what age of the plant it breaks, and how, 

 of what colour and coniiflence it is, and whether it entirely vanifhes, or 

 leaves any veftages. 



Of the Gills, as before montioned, fay, if they are in one, two, or 

 three feries ; whether broad or narrow, many or few; whether fine or 

 coarfe; whether adhering to the ftem by a narrow claw, by a broad 

 bale, or not touching to the ftem. Say of what colour from firft to lafh 

 Note, whether they yield a milky fluid, on being wounded or broken ; 

 and if fuch a fluid, fay of what colour, tafle, and fmell. 



Of the Pileus, note, what figure it affumes, from firfi: to laft ; what 

 its diameter in a ft ate of perfection, or at full growth; whether waved, 

 undulated, or crumpled round the margin, or regular and even; whether 



the 



