52 MICROSCOPICAL RESEARCH 



Chapter IV. 



Type preparations. 



EOOT STRUCTUEE. 



Root of Buttercup, 'Ranunculus acris,' ^/jg of an inch in diameter. 



Fixed with 92% alcohol. 

 Cut transverse sections ^/eoo of an inch in thickness. Place the sections in 



alcohol. 



Manipulate ISTos. 3 and 9. 



Compare the preparation with Fig. 1. Plate I. 



Root of Pine, 'Pinus sylvestris,' ^/i^ of an inch in diameter. 



Fixed with 92% alcohol. 

 Cut transverse sections ^/aooo of an inch in thickness. Place the sections 



in alcohol. 



Bleach the sections as per instructions. 



Manipulate Nos. 3 and 12. 



Compare the preparation with Fig. 2. Plate I. 



Root of Yellow Iris, ' Iris Pseudoacorus,' \ of an inch in diameter. 



Fixed in 92% alcohol. 

 Cut transverse sections i/,so of an inch in thickness. Place the sections 



in alcohol. 



Bleach the sections. 



Manipulate Nos. 3 and 12. 



Compare the preparation with Fig. 3. Plate I. 



