CONTENTS 
Forms of hairs . 
Papillee 
Unicellular hairs 
Multicellular hairs . 
Periderm 
Cork periderm . 
Stone cell periderm P 
Parenchyma and stone cell perideomh 
CHAPTER III 
MECHANICAL TISSUES 
Bast fibres 
Crystal bearing ee Sins 
Porous and striated bast fibres 
Porous and non-striated bast fibres 
Non-porous and striated bast fibres . 
Non-porous and non-striated bast fibres 
Occurrence of bast fibres in powdered drugs 
Wood fibres . 
Collenchyma cells 
Stone cells 
Endodermal cells 
Hypodermal cells 
CHAPTER IV 
ABSORPTION TISSUE 
Root hairs 
CHAPTER: V 
CONDUCTING TISSUE 
Vessels and tracheids 
Annular vessels . 
Spiral vessels 
Sclariform vessels 
Reticulate vessels 
Pitted vessels ; 
Pitted vessels with boniered pores 
Sieve tubes . 
Sieve plate A let, eta ee 
Medullary bundles, rays aaa elle Beat: Aiur ecient 
Medullary ray bundle . 
The medullary ray . 
The medullary ray cell 
I2I 
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