PUBLICA TIONS. 589 
This form of land life has since been found in other coal regions in 
America and in the Devonian plant beds of St. Johns, but not in 
Europe. Spiders and scorpions were found in the Palzozoic beds of 
Europe before they were recognized in America. 
The known land animals of the Paleozoic of Canada embrace: 
Vertebrata, twenty-six species, all Amphibia; Arthropoda, thirty-three 
species, embracing insects, scorpions and myriapods, and Modlusca, five 
species of pulmonate snails. The author gives a classified list of these 
land fossils, with notes and brief descriptions of the new forms. 
Under the head of Vertebrata he observes that no land vertebrates 
have been recognized lower than the base of the Carboniferous system. 
Some Devonian fishes may have been endowed with a swimming-blad- 
der capable of being used as an imperfect lung after the manner of 
the modern dipnoi. We may hope, however, yet to find. land verte- 
brates in the Devonian. 
The author adds a very interesting note on two erect stumps of 
trees recently found by Mr. P. N. McNaughton in the coal series at 
South Joggins. The hollow of one of these contained the fragmentary 
remains of nine species of vertebrates, including about thirty individ- 
uals. Besides this there were numerous fragments of millipedes, and 
rather rare remains of Pwupa vetusta. The second stump contained 
remains of thirteen individuals, including four or five species. Both 
stumps occur at considerably lower horizons than the well-known 
stumps found many years ago by Lyell and the author. 
The paper closes with helpful and stimulating suggestions to col- 
lectors. aCe. 
Om klitternes vandring, by K. J. V. SrEENSTRUP (Meddelelser fra 
Dansk Geologisk Forening, Bianco Lunos Kgl. Hof-bog- 
trykkeri, Kjobenhavn, 1894). 
Dr. Steenstrup calls attention to some characteristic features of the 
sand dunes on the west coast of Jutland. He has made out these 
features partly by observations in the field and partly by study of the 
topographical charts of the war department. ‘These charts are con- 
structed on a scale of 1 : 20,000 with contour-intervals of five feet, and 
exhibit well the topographic characters of the sand dunes. The author 
finds that the original shape of these wind-formed hills, seen in plan, 
is that of parabolic ridges, which have their concave and: open side 
