being the same as the lower line, fig. 1. Fig. 4, or the Bengal line, appears to have its maxima and minima, generally speaking, somewhat earlier than the fictitious line :-fig. 6, or the north-west line, has them somewhat too late, and fig. 7, or the southern line, still later. A fact somewhat analogous to this is observed in Europe where the variations of the barometer are said to take place on the shore of the Atlantic a day and a half earlier than at St. Petersburgh; but in neither case is the difference regular. However, all the information of every kind that I can gather on the subject would lead to the belief that the changes generally do take place earlier towards the northern and eastern parts of the country, later towards the southern and western. I am speaking, of course, of Northern India, having as yet no lists from the south of the Nerbudda.

I have not endeavoured to connect the appearances observed with the position of the moon, unaware of the difficulties which attend such a supposition, but because I was at a loss to find one which would account for the phenomena better. As to the appearances themselves, the variations in the price of corn and their recurrences, they of course will rest upon better or worse evidence in proportion as the multiplication of lists from different parts of the country confirm, or not, the indications they afford. From the nature of the subject, much accuracy in the conclusions cannot be hoped for: nevertheless by perseverance some truths may be elicited, which may serve to direct philosophical research, and perhaps to give us some insight into what is likely to happen for the future, in the absence of all better information.

V.-On the Climate of Darjiling.

We make an exception to our general rule of not inserting meteorological registers except in abstract, in favor of the following six months' diary kept by Doctor CHAPMAN at the new station of Darjíling in the Sikkim portion of the Sub-Himálayan range, because it is very important that every information should be made public in regard to the climate of a place selected, or at least proposed, as a sanatarium for the recruiting of exhausted Bengálí constitutions, more accessible than the far western hills of Simla and Masúrí, or the eastern station of Chirra Punjí.

Before Doctor CHAPMAN started on his official deputation to Darjiling, his instruments were carefully compared with the standards registered in this Journal. He was particularly requested to attend to the wet-bulb depression, as compared with the dew point; and to the

boiling point of water, as compared with the barometric indications. As his thermometer for the latter object was only divided to 2o, we have since despatched a new one of greater sensibility, whence we hope soon to obtain valuable data for the correction of the usual tables for the measurement of heights by the thermometer. The dew points noted are curious, sometimes higher than the wet bulb or evaporation point. Can this arise from an error in the DANIELL'S hygrometer? We have always found a little iced water added drop by drop to a little common water in a highly polished gilded silver cup, the most trust-worthy mode of taking the dew point. It can be depended on to the tenth of a degree.

Upon the strength of our observations in the December Journal we may, with confidence, calculate the altitude of Titalya, and Darjiling from the three months' observations of October, December, and January*. Thus applying the constant correction of-.004 to Dr. CHAPMAN'S Bar. A, we have

Corrected heights of the Barometer at 84 A. M. mean temperature of air 75°, At 44 P. M, ditto, 84.5

Altitude

Mean altitude by 120 obs. of the Barometer, ft. 6957.5

The altitude of Darjiling hill by two observations of Capt. HERBErt, published with his report in the Gleanings of Science, is 7218 feet, or 250 feet higher than Dr. CHAPMAN's house. The altitude deducible from the thermometric indication of boiling water is only 6648.5: but little confidence is to be placed in the latter without a very accurate instrument. It is to be remarked also, that the barometric measure will shew a much closer agreement when not corrected by the multiplier for the assumed mean temperature of the stratum of air between the two stations, Unconnected they stand thus: 6595.8, 6578.4, 6624.6, and 6619.2; the maximum discrepancy from the mean 6604.5 being only 26 feet. A numerous series of barometrical results from similar tables will enable us to form a more correct appreciation of the influence of variations of temperature on the formula. N. B. The barometric heights above stated have been all reduced to 32°. * We have since received the registers for February and March, which we insert, deferring observations till the series is completed.

Meteorological Register kept at Titalya, for the month of October, 1836.

Thermometer in the Air. Regtg. Ther. Rain.

Meteorological Register kept at Darjiling, for the month of December, 1836.

Appearance of Sky.

moist. bulb. Min. Max. Inches

3 23.396 23.329

8

.483 .440 44

50

8.5

34

54

N.

E.

9 .475 .423 46

51

9

35

54.5

N.

Calm.

Bright all day.
ditto

200.2

200.2

10

.434 .398 44

51

11

9

36

53

W.

S. W.

Clear.

Few cirri

200.0

Calm.

W.

ditto

Cirri.

200.0

Clear all day.

N. W. Few light cumuli.

Few cumuli.

N. E. Cirri.

Overcast, cldy, all day.

Clear all day.

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