On the theory of the Variations of Atmospherical Phenomena. 31 
Art. VL—On the bearing of the Barometrical and Hygromet- 
rical Observations at Hobarton and the Cape of Good Hope 
on the general theory of the Variations of Atmospherical Phe- 
nomena ; by Professor Dove of Berlin.* 
I nap hoped to have prefaced this volume with a discussion of 
the meteorological observations made hourly at Hobarton from 
January, 1841, to September, 1848 (of which the abstracts were 
published in 1850 in the first volume of the Hobarton Observa- 
tions), from the pen of Professor Dove, who had kindly under- 
taken, at the magnetical and meteorological conference at Cam- 
bridge in 1845, to participate to that extent in the reduction and 
application to theoretical conclusions, of the results of the Obser- 
vations at the British Colonial Observatories; but M. Dove's ap- 
pointment, on the death of Professor Mahlmann in November, 
848, to the charge of the meteorological observatories in the 
Prussian states has materially abridged the time at that gentle- 
man’s disposal, and he has found himself unable to complete the 
discussion he had undertaken for the present volume without 
Oceasioning an inconvenient delay in its publication; the discus- 
sion will therefore be prefixed to the fourth volume; but in the 
mean time Professor Dove has kindly furnished for this volume 
the subjoined remarks (written in German) upon the bearing 
which the barometrical and hygrometrical observations, at the 
Colonial Observatories at Hobarton and the Cape of Good Hope, 
have had on the general theory which professes to explain the 
physical causes of the variatious which we observe in the atmos- 
pkerical phenomena of the globe. The testimony borne by so 
eminent a meteorologist to the importance and value of this por- 
tion of the observations made at the British Colonial Observato- 
nes, cannot fail to be highly acceptable to the Government which 
instituted it, and td the public who have paid for these establish- 
ments, as it must be most satisfactory to the officers and to their ~ 
assistants, by whose patient and unremitting labor facts of which 
opie 
_ The establishment of meteorological stations in distant parts of 
the globe had, generally speaking, for its immediate object, so to 
complete the partial knowledge we already possessed of the phe- 
_, {From “Observations made at the Magnetical and Meteorological Observator 
Hobart oa Von thsenney alan” Yel iij"Iotroduction —Phil Mag, Oct, 185, 
