
208 REVIEWS. 
new 
were originally written for the newspapers by order of the legislature o 
Iowa while the survey was in progress, a plan which other States N 


















county what the survey is really accomplishing for their benefit. G; 
was found in such quantities near Fort Dodge that it has been used 
building stone. In Mills county oe systems of glacial scratches 
found diverging at an angle of thirty-one degrees, and about tw be. m 
the drainage of the western watershed.” The ‘Waled Lakes” of Io 
a paper also published in the May number of this Magazine, is esp 
interesting as showing how nature, in some of her processes, may ’ 
up a structure so regular that it may be mistaken for an artificial co pst 
ion. Some space is also given to descriptions of Indian mounds, 
circular in form, but thus far found to be barren of implem ments or 0 
remains, and occupying the most elevated and picturesque elevations. 
conjecture is made in respect to their pigh or the purposes for 1 
they were intended by their ancient builder 
CALIFORNIA Mosses.*— Professor Lesquereux remarks that 
of California, in all its aie maag is liable to great local val 
according to the peculiar atmospheric and chemical conditions "a 
is subjected. The more the phænogamic flora of that region is 
the more the ńumber of species is diminished.” 
THE VARIATION OF ANIMALS AND PLANTS UNDER DoMESTICATIO® 
We have bui space at present to quote from Dr. Gray’s preface | 
American Edition regarding this storehouse of facts, 
; sical, as well as agriculturist, should be acquainted. 
“It is a perfect treasury of facts relative to domestieat animals 
some of the more important cultivated plants; of the prin 
govern the production, improvement, and preservation of breeds 
races; of the laws of inheritance, upon which all orga anization 
proved varieties depends; of the ill effects of breeding in-and-i; 
sary though this be to the fall Sere: and perpetuation ofat 
race or breed; and of the y effec gel an occasional cross, by” 
_ rightly man Aged; a breed may be invigorated or improv ved. 
various kindred subjects are Aiseasned scientifically with a 
acuteness, and impartiality, by one who has devoted most vere 
“The California Academy of Science gii California ne of Natun 
h tame to eros Vol. I, Part 1, contains a “Catalogue 
«The fon 


Mosses,” by Professor Leo Les pp. 3, Darwin. 
Aii Variation ot premi at ‘Plants under Domestication. By Chani iusto 
ized edition, with a Preface b ay See r Asa Gray, 2vols. 12mo, with - 
York, naa Judd & Co., 1368, $6 
