CONTENTS xiii 



PAGE 



Mesocarp Tissues 202 



Endocarp Tissues 202 



Cell Contents Present in Fruits 205 



Tabulation of Functions of the Tissues Present in Fruits 205 



CHAPTER XVIII 

 SEED STRUCTURE 



Parts of the Seed 206 



Tissues Present in Seeds 206 



Arrangements of Tissues in Wheat Seed 207 



Testa and Tegmen Tissues 207 



Endosperm Tissues 207 



Embryo Tissues 209 



Arrangement of Tissues in Black Mustard Seed 209 



Testa and Tegmen Tissues 209 



Endosperm Tissues 211 



Embryo Tissues ' 211 



Cell Contents of Seeds .' 212 



Tabulation of Functions of the Tissues present in Seeds 212 



CHAPTER XIX 

 MICROSCOPE ACCESSORIES 



Mechanical Stage : 213 



Micromeasurements 214 



Ocular Micrometers 215 



Standardization of Micrometers 215 



Filar Micrometers 217 



Unit of Micromeasurement 217 



Camera Lucida 217 



Polarizing Apparatus 219 



Nicol Prisms 220 



Analyser 220 



Polarizer 220 



Crossed and Uncrossed Positions 221 



Isotropic Substances 221 



Anisotropic Substances 221 



Selenite Plates 221 



Microscope Lamps 222 



