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sive sublimate, used as a steep for the seed, destroys the vitality 
of the pest. The Bunt is, nevertheless, very interesting to the 
microscopist, the spores are large and beautifully reticulated, and 
the way in which they give origin to secondary, and even to 
tertiary forms of fruit, as delineated by Tulasne, possesses so 
much interest, as to make them well worth the trouble of raising. 
We have about 17 Genera of the Pucciniei distinguished by the 
number of cells in their spores, and by their mode of attachment 
to the mycelium. In Aregma, the spores are many-celled and 
somewhat moniliform or necklace-like, and seem to form a state 
of transition to Torula. In Puccinia the spores are two-celled and 
seated on long footstalks ; while in Podisoma, a fungus infesting 
juniper, the spores, very similar to those of Puccinia, are agglutinated 
together by gelatine, and spread out above into a club-shaped 
mass. Several Genera of this Order with unicellular spores are 
are regarded by Tulasne as mere states or conditions of various 
species of Puccinia. Unger regarded them as merely diseased 
cells of the plants on which they occur, and not autonomous 
plants ; but this notion seems very improbable when we consider 
the complicated fruit of certain species. In Coleosporium there 
are two forms of fruit, one separating at the joints and the other 
persistent. So, in Melampsora there are two forms, one globose, 
the other forming a dense mass of wedge-shaped bodies. In 
Cystopus, we find a receptacle of branched threads occupying the 
intercellular passages of leaves, which give origin to necklace- 
shaped rows of conidia produced beneath the cuticle; these at 
length burst out and escape, and are dispersed to germinate anew 
and produce fresh plants. I must not pass over, without allusion, 
the account of the reproduction of Cystopus, given by De Bary, 
as it possesses great interest. He says, “If the Conidia are placed 
on a slip of glass in a drop of water, the following changes occur :— 
A projection is soon formed at one point of the conidia; the 
granular contents are then gradually separated into five or more 
distinct. masses, each containing a zoospore ; these are shortly after 
