Botany and Zoology. 331 
authors of the Polypetalew, and Asa Gray of the Gamopetalew. 
That the work is now finished is due mai inly to the indefatigable 
industry of the botanist in whose name it is issued; that it. is 
published, as we learn from a preparatory note, is owing ¢ iefly 
to the zeal and liberality of Hon. 8. C. Hastings, who solicited 
and obtained the necessary pecuniary means Poh this perpese 
His fellow-contributors for the present volume e D, O. Mills, 
Henry Pierce, Leland Stanford, J. C. Flood and eevee Crocker, 
all of San Francisco, 
T ume contains the Apetalous orders, the Gymnosperms, 
phe Monoeatyledonous orders, and the higher orders of Cryptog- 
8 plants. As is usual in works of this character, some por- 
tions are comin nen by special collaborators, Dr. Engelmann 
ay that Dr. Watson’s work bears evidence of being very 
carefully done, that his classification is mainly conformed to the 
approved modern popes ia € bs ene hataniet ts, that his tech- 
nical characters, of ordet and species, are concise yet 
exact and wiles full, that (ea at aes of habitat and range 
are well studied, and that his remarks appended to the generic 
and specitic descriptions are judicious,—is too feeble praise. The 
work is more than good; it is admirable; it is in advance of any- 
thing of the kind which has ever been seen, and will long serve 
asa model for a flora, and as an exalted standard, 
he author’s great ability as a writer of A anaus magn’ is 
especially prfent in his treatment of the Mosses of the Pacific 
States. “He has not been hitherto classed among Perec Bry- 
ologists, and has certainly not devoted year after year to the 
ucroscopic study of these little plants; but he has had before 
im the writings of Sullivant, Schimper, Lesquereux, Mitten 
James, Austin, Mueller and others, as well as the rich collection 
in the panne Fenpenan: and he has collated and reduced to 
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volume was papisy ied, together in few | eas ns to the 
second volume, are given in the latter part of this volume, making 
he whole feeding aan up to the summer of 1880. Then fo an 
index ie the whole work, a concise glossary of technical terms, 
and a very interesting “list of persons who have made botanical 
' collections i in California.” This is more than a list of names, for 
it ree some brief account of all known collectors of Californian 
peut s from Thaddeus Henke, in 1791, to 8S. F. Peckham, in 1866, 
he principal more recent collectors are also mentioned, 
