aoe! Reviews. [ZOE 
792. OPHIOGLOSSUM NUDICAULE L.—El Taste. 
791. GYMNOGRAMME PEDATA Kaulfuss.— Near Mt. San 
Lazaro. 
792. PELLAIA SKINNERI Hooker—Near Mt. San Lazaro. 
793. ASPLENIUM PUMILUM Swartz.—Near Mt. San Lazaro. 
794. WOODWARDIA RADICANS Smith.—La Chuparosa. 
795. MARSILIA MINUTA Fournier.—San José del Cabo. Iden- 
tified i L. F. Underwood. 
REVIEWS. 
Letters of Asa Gray—ELdited ee mes Gray—in two 
volumes—1893—Houghton, Mifflin & Co. t has been my 
aim, in collecting and arranging the ‘ Letters’ pe Dr. Gray’s 
large correspondence, to show as far as possible in his own words, 
his life and his occupation. The greater part of the immense mass 
of letters he wrote were necessarily purely scientific, uninterest- 
ing except to the person addressed; so that many of those” 
published’ are merely fragments, and very few are given com- 
pletely. I have made no attempt to estimate his scientific or 
‘critical labors, for they are sufficiently before the world in various 
printed works; but something of the personality of the man and 
his many interests may be learned from these familiar letters and 
from even the slight notes.”’ 
From this prefatory note by Mrs. Gray the scope of these 
letters is at once apparent. They make the reader acquainted 
with the man, and sufficiently so with the student of plants to 
make them indispensable to every American botanist. The 
botanical letters of Gray are still to be hoped for in the future. 
Nearly every contemporary botanist in America can furnish 
treasured and most interesting letters from him but it may be 
that they were intentionally withheld for the present, on 
account of his well-known habit of expressing his views forcibly 
and unreservedly concerning all botanical subjects discussed. 
We reprint, by kind permission of Mrs. Gray, on page 372 pre- 
ceding, the last letter written by Dr. Gray. 
