Botany and Zoology. 133 
very recent date, than by Lindley’s crude and imperfect hypothesis, 
which is most satisfactory to the auther. For the want of a notice 
errata (which are numerous, owing to the printing of the work ata 
great distance from the author’s residence) we cannot ascertain what 
species is intended, on p. 60, by Magnolia heterophylla. 
ut what surprises us most is to find, now and then, in the course 
of a chapter which is on the whole clear and satisfactory, some gross 
absurdity like the following : 
“« Raspail asserts that the pollen is a production of the internal surface 
of cells within the theca, to which the grains are attached by a funicle. 
This is denied by other botanists.” (p. 7 
This is all that is given on the subject of the formation of pollen,— 
a 
elementary a treatise ; but whatever is stated should have some resem- —_ 
lance to or compatibility with what is true, or what i .. ee 
generally thought to be true. Whereas this statement is worse than 
ae 
continue to adopt. Yet, as he has evidently given particular attention 
to physiological questions, he ought to have known, before the year 
h he cannot be wholly ignorant, which have negatived every es- 
hen, 
