58 The American Geolof/i.sf. January, 1895 
the serpentine the only orijjfinal mineral now distinguishable isdialhige. 
A narrow belt of iilaiic()i)hane schist freciuently occurs at the contact of 
the country rock witli both the serpenlinc and I'ourcliite. As this schist 
is clearly a fjroduct of conlact action, all of Die lilaucophane schists of 
the Coast ranges can not bf ri-ferred to regional metamorphism, as 
has heretofore been done. The glaucophanc is developed in the cherts 
as well as in the sandstones. 
The chert (phthanite of IVcker) is found to contain abundant remains 
of radiolarians, so poorly preserved, however, that specific determina- 
tion is out of the question. Several figures of these fossils are given, 
and Dr. Hinde is able to ref(;r some of them to certain genera: he calls 
attention to the number and variety of the forms of the genus Dirlyomi- 
tra which are present. u. s. o. 
Geological Siirrei/ <>f Afisxnnri, >S/it'('f.s Av'-v. ,.' (oid n, tJw Bcvicr sheet and 
the Iron Mountain sJieet. iVuTHUR Winslow. statf geologist, .letferson 
Oity. Published by the (ieological Survey. 
Each of these "sheets'" is accompanied, Ihr former by three, and tin- 
latter by two, other sheets of the same size as the sheets themselves, and 
they are included separately in two paper covers or folios. Each sheet 
has a description sheet, giving briefly an account of the geology of the 
-area of the sheet, while on the other accompanying sheets are perpen- 
dicular and cross-sections illustrating the geological structure. Each 
sheet covers an area fifteen minutes of latitude by fifteen minutes of 
longitude, making appro.\iniat(dy a rectangular parallelogram of con- 
venient proporiions. The scale is ^-^^-^^ of nature, or aj^pro-ximately 
one inch to the mile. Uased upon latitude and longitude they do not 
agree with the boundaries of tovi^nsand counties, although the town and 
county lines are expressed on them, as well as the section lines of the 
land survey. They are both marked in detail by contour lines, the in- 
terval being 20 feet. The Hevier sheet was done under the charge of C. 
H. Gordon, with ('. F. Marbut and M. C. Shelton as assistants. The 
Iron Mountain sheet is by the slate geologist, who had the aid of Eras- 
mus Haworth on the crystalline rocks, and E. H. Ijonsdale and V. F. 
Marbut as topographers and geological assistants. The Bevier sheet was 
engraved in Washington, I). C, by Evans and Bartle, and is dated Octo- 
ber, 1893. The Iron Mountain sheet was engraved by George S. Harris 
and Son, at Philadelphia, and is dated January, 1804. One other simi- 
lar sheet has been issued — the Higginsville sheet, noticed in the (Jeol- 
OGIST, vol. X, p. :n7. No other state survey has attempted so detailed 
topographical work nor so cosily and elaborate a system of mapping. 
These sheets comi)are. to their advantage, with those of the T'nited 
States Geological Survey; and if the State of Missouri persists in thisen- 
terprise to the completion of the survey, on this scale of excellence, she 
will not only be far in advance of her neighbors, l)ul will rank with the 
Slates of central Europe. >'• n. \v. 
Geological Map of Alabaimi, irith an expliiiiitturn rliarf. EfOKXK A. 
Smith, state geologist. INIonlgomery, 1894. 
