68 MICROSCOPICAL RESEARCH 



Wheat-rust, 'Puccinia graminis.' ^cidiaspores on leaf of barbery. 



Fixed witli 92% alcohol. 

 Celloidinize the speciiaen. 

 Cut transverse sections of leaf ^ j isoo of an incli in thickness. Place the sections 



in alcohol. 



Manipulate No. 10. 



Compare the preparation with Fig. 72. Plate XX. 



Entire plant of ' Peziza convexula.' Fixed with 92% alcohol. 



Celloidinize the specimen. 



Cut vertical sections of plant ^ j ,50 of an inch in thickness. Place the sections 



in alcohol. 



Manipulate No. 8. 



Compare the preparation with Pig. 73. Plate XX. 



Sea-weed. Conceptacles of ' Fucus vesiculosus.' 



Fixed with chromo-acetic solution in sea water. 

 Celloidinize the specimens. 

 Cut transverse sections of male conceptacle, '^/looo of an inch in thickness. Place 



the sections in alcohol. 

 Cut transverse sections of female conceptacle, ^/looo of an inch in thickness. 

 Place the sections in alcohol. 



Manipulate No. 8. 

 Compare the preparations .with Fig. 74 — 75. Plate XXI. 



Feen, entire thallus of ' Gymnogramma sp.' Fixed with chromo-acetic solution. 



Manipulate No. 1. 

 Compare the preparation with Fig. 76. Plate XXI. 



