300 The American Geologist. May, ifc98 
two admirable alluvial fans sloping down on the east side of the 
glen at one and two miles below the mouth of the river Tur- 
ret. The massive drift accumulations Avhich the Turret in- 
tersects near its mouth, regarded by Jamieson as a delta, seem 
to me better interpreted by Prestwich as a marginal moraine 
of the ice barrier when it stood there, four and a half miles 
west-southwest of the Roy-Spey col. 
The next paper in this series will describe the many re- 
cessional moraines seen between the head of Glen Roy and 
Ben Nevis, and will present reasons (following Jamieson) for 
regarding the retreating Scottish ice-sheet as the barrier of 
the lake which formed the Parallel Roads. 
TERTIARY AND QUATERNARY DEPOSITS IN THE 
MAGELLAN TERRITORIES. 
By Otto Nobdenskjold, Upsala, Sweden, 
During the two Antarctic summers, 1895-96 and 1896-97, 
that I spent in the Magellan territories (in Terra del Fuego 
and South Patagonia south of the Santa Cruz river) I con- 
centrated my attention largely upon studying the most recent 
deposits of those regions with especial regard to the possibility 
of being able to trace any proof in them of a glacial period. It 
is of "the results of those researches in so far as they are 
already to hand that this paper is intended to give a short 
account. 
Seeing in the first place that the general character of 
the Tertiary deposits in South Patagonia has been the subject 
of a number of recent papers embodying results of re- 
searches,* and in the second place that the parts of the district 
I visited are some of the poorest in the matter of fossils, I 
*The principal works treating of these deposits, and which will 
be drawn upon for quotations below, are: 
A. Mercerat. Essai de classification des terr. sediment, de la Pata- 
gonie australe, Ann. Mus. Buenos Aires, V, 105. 
F. Ameghino. Geology of Argentina, Geo!. Mag., Jan. 1897. 
J. B. Hatcher. Geology of Southern Patagonia, Am. Jour. Sci., 
Nov. 1897. 
Of great importance for these questions are also 
Chas. Darwin. Geological observations in South America, London, 
1876. • 
L. Agassiz. South American expedition, Nature, 1872, VI, 216. 
