viu 



CONTENTS. 



Summary : — 



Number of Species .... 

 Comparative Frequency and Extinct Species 

 Comparison with the ' Cybele Britannica ' 

 Adjacent Counties 

 Thurmann's ' ESSAI ' 



PAGK 



345 

 345 

 346 

 348 

 357 



Sketch of the Progress of Botanical Investigation in 

 Middlesex; with Biographical Notices 



363 



