NOTES AND CORRECTIONS. 



Page 373, line 2 from bottom, " the archegonia, known formerly as 

 corpuscula ". This is a well-nigh universal misstatement in text-books. 

 The term corpuscula was applied by Robert Brown to what are now called 

 the " oospheres " of the gymnospermous ovule, and not to the structures now 

 known as " archegonia ". 



Page 374, line 8 from bottom. For " pollen-sac " read " pollen-tube ". 



