50 
Milk as the sole diet of ruminants: ANDREW C. 
McCanDLIsH. 
Eazperiments with soy bean meal as a substitute 
in the army ration: ARTHUR W. Dox. 
Further work on acid potassium phthalate as a 
standard in volumetric analysis: W. S. HENDRIX- 
SON AND SERENO G. Norton. 
Geology 
Contributions to the geology of southwestern 
Iowa: Gzrorce L. SmitH. The author did consid- 
erable work in this field during the past year. The 
paper is somewhat critical on the superficial work 
done in the past in this difficult geologic field but 
the author himself is more uncertain of the geol- 
ogy of this part of the state than he was twenty 
years ago. 
Progress report on recent investigations of the 
Pleistocene in Iowa: Grorce F. Kay. 
(a) History of the investigation of the Pleisto- 
cene of Iowa. (b) Relation of the Wisconsin drift 
to the Iowan drift as revealed in Worth county: 
Emmet J. CABLE. 
Interstate affinities of our coal measures: 
CHarLes Keyes. That the several coal fields of 
the Mississippi valley should remain so long with- 
out even approximate correlation of the different 
parts is one of the surprising features of American 
stratigraphy. Recent critical comparison of the 
terranal successions of the Hastern Interior Coal- 
field of Illinois and of the Western Coal-field of 
Iowa and Missouri reveals a parallelism having 
closer stratigraphic affinities than those displayed 
in Missouri and Kansas, which are in the same 
field. 
~ Salient feature of Iowa’s tertiary drainage: 
CHartes Kuyzs. Of the many traces bearing 
upon the character of the preglacial drainage of 
the Iowa region the most noteworthy, perhaps, is 
the trend of the leading stream-lines at high 
angles to the present river courses. The Old 
Moingona river, for instance, the precursor of the 
existing Des Moines River, coincided only in its 
lower reaches with the present water-way. The 
ancient river was also a much more pretentious 
drainage-way than Des Moines River, and headed 
far away in the Black Hills. 
Mountain-folding in the far north: CHARLES 
Kerysrs. The geological cross section exposed in 
the gorge of Athabasca River, near the northern ex- 
tremity of the Rocky Mountains, is from a tectonic 
angle, one of the most remarkable on the North 
SCIENCE 
[N. 8. Von. XLVIII. No. 1228 
American continent. Insofar as the western world 
is concerned this section is unique in that it is the 
sole known expression of the fan-structure which 
so peculiarly characterizes the Swiss Alps. On 
Athabasca River only one half of the orographic 
fan is shown. On the opposite, or western, side 
of the Cordillera, along Frasier River, the pre-Cam- 
brian slates, the dips of which are quite variable, 
portend the other limb of the fan. 
Park sites along Des Moines valley: JAMES H. 
Legs. A number of geologically and scenically in- 
teresting localities along Des Moines valley which 
are suitable for state or district parks are de- 
scribed and illustrated. 
The deepest well in the state: JAMES H. LEES. 
The well at Stuart, completed in 1916, is 3,121 feet 
deep, 111 feet deeper than the next shallower one, 
which is at Boone. It penetrates the New Rich- 
mond sandstone. : 
_ Some features of the Fort Dodge gypsum: 
James H. Less. Underlying the gypsum in some 
places is a fossiliferous conglomerate which prob- 
ably has an important bearing on the age of the 
gypsum. Exposures of the gypsum under the drift 
show a remarkably irregular solution surface, whose 
age seems to be pre-Wisconsin. At one place the 
gypsum is heaved into mounds, evidently by ex- 
pansion of the erystals through absorption of 
water. Solution channels are well shown here also. 
A fauna from the Ste. Genevieve marls of Fort 
Dodge: A. O. THomMAS AND JAMES H. Less. An 
interesting and very abundant fauna from red 
limy marls which haye been classed as St. Louis, 
proves to belong to the Ste. Genevieve, which was 
formerly not known to extend into north-central 
Iowa. The fauna is largely brachiopods. 
JAMES H. LEES, 
Secretary 
SCIENCE 
A Weekly Journal devoted to the Advancement of 
Science, publishing the official notices and pro- 
ceedings of the American Association for 
the Advancement of Science 
Published every Friday by 
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