CURRENT LITERATURE 383 
ae But the greater part of the descriptive text throughout is new, the 
ne cryptogams and on physiology being entirely so.” 
Mr. Leavitt’s own part of the book is fresh, well chosen, and clear, with 
lardly more than that seemingly irreducible minimum of error to be found in 
‘“ementary books. specially noticeable is the position and character of 
laboratory directions, which precede the text on each topic. Besides the 
mon cryptogams, of fifty-five pages, eighteen pages are devoted to the 
© anatomy of flowering plants, and twenty-one to a “brief outline of — 
"gttable p ysiology.” Many of the illustrations are from theadmirabledraw- ee 
"g made for the Lessons and Structural botany, and a large number of in 
ahs introduced, which are both well chosen and well executed. Br 
tg . clear, however, to anyone who considers the laboratory spore 
— there is much more work laid out, especially in the secuOns = 
” than can possibly be accomplished, even in a year of work, 
will be able to use it. ee 
. any discussion of alternation of ee — 
cS Teached, the relation of the two phases of the live - ape 
|. wat obscure, Heterospory and the seed habit ace 
‘ong when undertaking to elucidate the “re spat 
2 “oT amiog ” suppositions are proposed reg: 
e 
me Sections which merely define the techn’ a 
“gg ‘reating of the flower, however, is st 
e 
= 
