Geology and Paleontology. 723 
the summit of Mount Dandi he has found a double lake of consid- 
erable extent and depth, shaped like the figure eight. An affluent 
of the Gudar issues from this lake. He also discovered a deep lake, 
with most beautiful surroundings, at the foot of the immense crater 
mountain called Mt. Harro. stream from this Lake Wancit 
joins the Walga, which rises on the summit of the mountain. 
According to the Consular Report for 1887, the population of 
Java and Madura in 1886 was 21,997,259, showing an increase of 
1,065,605 since 1884. The exports of cinchona are increasing. 
Late measurements of the heights of the Austrian Alps have 
reduced the Marmolata, the highest dolomite, from 11,464 feet to 
11,016 feet, have shown the Antelao to have 10,874 feet, and place 
the Cima di Vezzana at 10,470, and the Cima della Pala at 10,454. 
The former of these peaks must therefore be regarded as the loftiest 
of the Primiero group, the remaining peaks of which gain or lose 
only a few feet by the new survey. 
GEOLOGY AND PALZZONTOLOGY. 
OSBORN ON THE Mesozoic MamMata.'—In this essay we have 
a comprehensive and minute study of the Mesozoic Mammalia, 
based on the existing collections of the world. First among the 
latter is that of the British Museum; then that of Yale Coll 4 
motherium and Microconodon, which Prof. Osborn —_ 2A 
places in a new order, the Protodonta. Second, The close parallel- 
ism of the American and European genera, and of species of the 
latter country and South Africa. Third, The diversity of the 
dental types of the genera, and the specialization of some of them. 
here are six or seven wholly distinct types of dentition. 
iar a Structure and Classification of the Mesozoic Mammalia. By 
Philadelphia, born, From the Journal Academy Natural Sciences o 
[2] Vol. IX., pp. 186-265. July, 1888. 
