In our last the receipt was noted of rose plants ftom Montgomery county, in which the leaves were all " blighted " as if by some fungus, while the roots were all granulated as in the case of grapevine roots attacked by Phylloxera. But on cutting open we could find no trace of insect larvae. Supposing it might be the result of fungus, the specimens were sent to Prof. Farlow, who reports he finds no fungus, but believes the swellings to be galls caused by the deposit of the eggs of some nematoid worm. The Editor suggested to Prof. F. that possibly it might be the work of a myxomycetous fungus, such as causes club-root in the cabbage, and which seems to be considered the cause of some such swellings in rose roots in the Old World. Prof. F. remarks on this: "I should hardly think the swelling could be attributed to any myxomycete, if so it must be different from that which causes club-root".

We can hardly give our correspondent any advice in his serious trouble until it is decided what is working on the roots. Let him cut some of the swellings open from time to time, and see if insect life develop therein. A good pocket lens will determine this.

The hint, however, should not be lost on rose growers. When planting out roses, examine carefully to see if these swellings are on the roots, and plant nothing that presents signs of their existence.