179 
The mycelium of the Macrosporium ramifies through ami uot between 
the cells of the host, and the fertile hyphse bore their way to the sur¬ 
face through the outer cell wall of the epidermis, their apices appar¬ 
ently exerting some solvent action on cellulose. He has not observed 
them projecting from the stomata as Mr. Miyabe did. 
Mr. Shipley further f akes issue with Mr. Miyabe in regard to the para¬ 
sitism of the fungus. He has never seen a plant suffering from Macro¬ 
sporium that had not previously been attacked by Peronospora. In 
other respects, except the development of the peritliecia, which he did 
not observe, his observations confirm those of Mr. Miyabe. —Effie A. 
SOUTHWORTH. 
Underwood & Cook. Generic Synopses of the Basidiomycetes and 
Myxomycetcs. 
This is the title of a work designed “as an aid to instructors as well 
as a guide to students wishing to pursue the study of fungi alone.” Ac¬ 
companying this work are one hundred neatly labeled specimens of 
fungi illustrating the more important groups. These, together with the 
synopses, which consist of twenty-one pages bound in a neat octavo 
volume, sell for $6.00.—B. T. Galloway. 
DESCRIPTION OF PLATES. 
Plate XI (After von Tavel). 
Fig. 6. Ascospores. X 300. 
7. External appearance of the stroma with perithecia and pycnidia. Slightly 
magnified. 
8. Germinating ascospore, three days after being sown in water. X 600. 
9. Hypha, with gonidiophores of Acrostalagmus in moist air. X 300. 
10. Young pycnidium. The outer layer has become differentiated and the 
formation of the cavity has begun. X B0. 
11. Vertical section through a pycnidium produced on a leaf; X 214. 
12. Early stage of a pycnidium, from a cross-section through an infected leaf. 
X 700. 
Plate XII. 
Fig. 1. Mucro7ioporu8 Everhartii, natural size. 
2. A piece of the same showing length of pores in vertical section. 
3. Longitudinal section of pores, with central portion cut out. 
4. Spines enlarged. 
5. Cross-section of pores. 
