Instructions to Students 



A metrical scale and table of measures is here given, that the student 

 may have a present guide to such measurements as are given in myco- 

 logical publications. 



Measures. 



mi i 



Jin 



Illl I 



Deci 



I Metre ...... ______ 39 27 1 ____ 1 riches, 



1 Decimetre- ......... 3-9^-71 t. 



I .C enamel-re- (C M-) .3?37I 

 I Millimetre: (.M- M-) .02*9571 



( Millionrh of a Merre 2.54-00 oF an Inch. 



I Line- C'O'Tsl oFanlnoh 



\ Gramme ----- 15. 



"TVoy 



n gramme--. 

 1 Milligramme' ____ . 







The spore color being determined, turn to the Genera Chart, showing 

 Use of Charts spores of like color. Ascertain from the specimen whether 

 of Genera. or no t its cap or hymenophore is distinct or easily sep- 



arable from the stem and the gills free from the stem ; if they are, it 

 may belong to one of the genera in the upper row of figures ; if the cap 

 is not easily separable nor the gills free, look at the shape of the gills, 

 and find on the chart a corresponding gill-shape. It is probable that 

 the genus can thus be determined. Then turn to this genus in the text, 

 read the heading, look over the "Analysis of Tribes," go to the tribe 

 nearest in designating the properties of the specimen ; comparing th'e 

 specimen with the descriptions of species given thereunder, will probably 

 enable the seeker to decide upon its name. 



It should be remembered that the descriptions in the text are of the 



xxxi 



