OBSERVATIONAL LESSON VII 

 PART I A MOULD (continued, second investigation} 

 PREPARATIONS FOR WORK 



(1) The " mould-gardens " which were " sown " during the last lesson will be wanted. 



DIRECTIONS TO THE PUPIL 



(2) Count the little patches of mould in your garden : make a 

 plan of it and indicate the position of the growths, adding the date 

 of "sowing" and drawings in the spaces reserved. 



PART II A MUSHROOM (continued, second investigation) 

 PREPARATIONS FOR WORK 



The seed-pans prepared for the previous lesson should be ready, and a button 

 mushroom, as well as an older specimen, should be in the hands of each of the pupils. 



DIRECTIONS TO THE PUPIL 



(3) Turn the button mushroom upside down : write down any 

 difference between it and the older specimen that you may notice as 

 it stands ; put a sharp knife across the base of the stalk, and cut 

 downwards, dividing the button into two equal parts. Sketch the 

 inner face of one of the halves. 



(4) See how the spawn or threads of the fungus (collectively called 

 the mycelium) run through the manure and loam in the seed-pans, 

 and how several go to form a single one of the more solid portions 

 or mushrooms which appear above ground. 



(5) Leave a space (of half a page) in your note-book. Take the 

 cap of a second and older mushroom (away with you if necessary), 

 lay it on a sheet of white paper, gills downward, and examine it after 

 twelve hours. The black " spores" (similar structures to the green 

 spores seen in the mould on the lemon) will have fallen on to the 

 paper and made a pattern. Copy this into your note-book and 

 record how it was obtained. 



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