368 BOTANICAL GAZETTE [NOVEMBER 
Ellis and Everhart’s North American Fungi,° which appeared a short time 
ago. For twenty years the work has been issued with an average regularity 
and a uniformity in make up and quality rarely attained. 
The immediate cause of the discontinuance of the work is the sad illness 
of one whose name never appears in connection with its publication, but 
whose untiring zeal and labor have contributed largely to its success. The 
volumes for the whole series (except the first installment of sixty copies) 
have been made by Mrs. Ellis, the packets folded and the specimens put in 
place by her; and we may well believe that without her assistance and 
encouragement this splendid contribution to American mycology would never 
have been realized. 
The last issue, like each of the preceding ones, contains 100 specimens 
of dried fungi belonging to various groups, placed loosely in folded packets 
and provided with printed labels. These are attached to the leaves of a 
volume containing title page and table of contents. The labels occasionally 
bear brief critical notes, and still more seldom diagnostic characters. The 
naming of the specimens has been done with care, and if errors occur, they 
are few and unavoidable, 
The Fungi Columbiant, by the same authors, of which thirteen centuries 
have been issued and which have been, heretofore, a sort of duplicate of 
the N. Am. Fungi, will hereafter contain species that have not yet appeared 
in that work, and will thus in a measure be a continuation of it. The packets 
in this work are not fastened into volumes.—J. C. A. 
S. H1Ras&’s second paper on Gingko® adds an important contribution to 
the subject of spermatozoids in gymnosperms. The development of the; 
pollen grain, pollen tube and antherozoid are treated in detail. Three cells 
are cut off in succession from the main body of the pollen grain. The first 
of these is soon resorbed ; the second persists but does not seem to take ree 
active part in the processes which follow ; the third divides into a ‘‘stalk cel 
and a “body cell.” As the body cell increases in size two attractive spheres 
appear at the poles of its nucleus and somewhat later two larger spherical ie 
bodies resembling nucleoli are found between the attractive spheres and the” me 
nucleus. These bodies which are surrounded by a dense mass of granules 
may possibly aid nutrition but further investigation is necessary before any" 
thing definite can be said of their physiological or morphological value. bees . 
body cell divides parallel to the long axis of the pollen tube, giving ™S€ ee 
two cells in which the antherozoids are organized. A beak put out by sa 
nucleus becomes joined to the centrosome which then makes three spiral 
*ELLIs, J. B. and EVERHART, B, M.—North American Fungi. 2d Ser. Cent Ha 
Pub. by the editors, Newfield, N. J. 1898. $7.00. 
Etudes sur la fécondation et l’embryogénie du Gingko biloba. 
Jour, of tHe 
Tokyo Coll. of Science 12:102-149. 1898 , 
