Schlagintweit, Hermann von; Schlagintweit, Adolf; Schlagintweit, Robert von: Results of a scientific mission to India and High Asia: undertaken between the years MDCCCLIV and MDCCCLVIII, by order of the court of directors of the hon. East India Company (Band 4): Meteorology of India: an analysis of the physical conditions of India, the Himálaya, western Tibet, and Turkistan (Leipzig, 1866)

PREFACE.

In consequence of my obtaining from India new observations, of
which many within the last two years only, the publication of this
volume was materially delayed; whilst at the same time they presented
welcome materials for testing theoretically and practically the results
which we had obtained from our travels and our own registers.

Also the unexpected modifications resulting for some of the prin-
cipal conditions of the distribution of heat—such as the rise of the
thermal equator in the very height of the rainy season as far north as
32° degrees of latitude, the remarkable difference in the decrease of
temperature with latitude between autumn and the cool season; or, as
in High Asia, the unexpected deviation in many regards from what I
formerly had occasion to observe in the Alps in reference to the
thermal conditions of the borders, valleys and glaciers—are other ele-
ments which must be alluded to as having required exceptional time
and labour.

The provinces are brought into ten groups for India, and four
for High Asia. In the topographical details preceding the different
groups it was occasionally unavoidable to allude to causes of the same

IV.

B