86 
Lettuce Rust. J. C. Arthur. (Fourth Ann. Rep. N. Y. 
Agric. Exper. Station, pp. 250-252; one figure.) 
This disease first makes its appearance in the older leaves of 
the lettuce plants, which turn brown and appear as though pre- 
maturely aged. Both surfaces are found to be covered with 
minute specks. the perithecia of the fungus known in this stage 
as Septoria Lactuce, Pers. Its further life history is as 7 un- 
known, and no remedy has been discovered. 
Mycologic Flora of the Miami Valley. A. P. Morgan. 
(Journ. Cincinnati Soc. Nat. Hist,, iv., pp. 1-8; continued.) 
This contribution completes the list of Polyporez. 
New Species of Fungi from various localities. J. B. Ellis and 
B. M. Everhart. -(Journ. Mycol., ii., pp. 37-42.) 
Twenty-three new forms are described. 
Notes of a Visit to North America, as Delegate to the British 
Association meeting at Montreal, etc. W. Caldwell Craw- 
ford. (Trans. and Proc. Bot. Soc. Edinburgh, xvi., pp. 269- 
272:) 
Osmunda  Claytoniana—Branching of. A. <A. Crozier, 
(Amer. Nat., xx., p. 379; three figures.) 
Pear Blight. (Micrococcus amylovorus, Burrill.) J. C. Arthur. 
(Fourth Ann. Rep. N. Y. Agric. Exper. Station, pp. 241-248.) 
Mr. Arthur describes his methods of investigation of the 
cause of this disease, and reaches the conclusion that it is directly 
due to a specific microbe which Professor Burrill has described 
under the above name; the germs gain entrance to the tissues 
through the tender surfaces of flowers and new shoots; they may 
grow in dead organic matter outside of the trees, but on again 
entering the tissues are able to produce the disease in its full viru- 
lence. No formation of spores has yet been detected. 
Peziza,—WNotes on. J. B. Ellis. (Journ. Mycol., ii., pp. 44-47.) 
Protococcus viridis. E. B. Southwick. (Journ. N. Y. spent 
Soc., ii., 1-8; one plate.) 
An interesting account of the growth of this organism on one 
hundred species of trees in Central Park, New York city, and on 
stone walls of the vicinity. It is most abundant on northern 
and northwestern exposures. Its appearance on the American 
Elm is illustrated. 
