1887] Botany. 477 
When a spotted strawberry-leaf is brought, let the teacher tell 
something about its cause, even if it be but little. Let him show 
But many a teacher will say that such work is impossible to 
any but a professional botanist with a perfect acquaintance with 
all the plants of the flora. It is not necessary, however, that 
full details should be given regarding any plant brought by the 
pupil. He must be a poor teacher indeed who cannot suggest 
something to his pupil about a toadstool or a puff-ball. It is 
not necessary to know the species or even the genus to which 
the grand divisions of the vegetable kingdom, and who is not 
able to render a little aid to the pupil in whatsoever botanical 
class his plants may fall.—Charles E. Bessey. 
The Entomophthoreze.—According to a note in the Yournal 
of the Royal Microscopical Society, Dr. E. Eidam has recently 
made a revision of the Entomophthoreze (in Cohn’s “ Beit. zur 
Biol. der Pflanzen,” IV., 1886), and given diagnoses of the gen- 
era,—seven in all,—viz., Empusa, Lamia, Entomophthora, Ta- 
richium, Completoria, Conidiobolus, and Basidiobolus. He ` 
places the family in the Zygomycetes, in close proximity to the 
Mucorini, tracing a relationship to the latter through Piptoceph- 
alis and Syncephalis. 
Laboratory Notes.—The usefulness of a simple and inex- 
pensive eye-piece micrometer as a part of the outfit of each micro- 
scope in the laboratory can scarcely be fully appreciated until 
