308 CONTRIBUTIONS TO METEOROLOGY. 
rivalled, has published some interesting remarks on the subjeet, in the last number 
of Silliman’s Journal. In these remarks, Mr. Field expresses his conviction that 
the foot-tracks in question are of reptilian origin. Many of the supposed biped 
tracks are now shewn to have been made by quadrupeds ; and in some instances, 
in which the animals appear to have sunk deeply in the yielding sediments, the 
impression caused by the tail is plainly visible in the form of a central groove. 
EIGHTH SUPPLEMENT TO DANA’S MINERALOGY. 
In the absence of Professor Dana, who is now in Italy, the usual semi-annual 
Report on the progress of Mineralogy has been well and carefully drawn up by 
Professor G. J. Brush. No very remarkable works have appeazed since the date 
of the last Supplement, nor have any very important researches been published. 
Some of the more interesting, comprise: Rammelsberg’s discovery of Magnesia in 
the Vesuvian Iron Ores, and the foundation of his new species, the Magnoferrite ; 
the recognition of Tin Ore (Cassiterite) in specimens from Los Angelos, California, 
by Dr. C. T. Jackson; and the suggested Trimetric or Monoclinic crystallization of 
Tourmaline, by Jenzsch and Breithaupt. In connection with the subject of Mine- 
ralogy, we may mention with regret the recent death of the veteran professor, 
J. F. L, Hausmann, of Gottingen. Professor Hausmann died on the 26th of last 
December, at the advanced age of seventy-seven. E. J.C. 
CONTRIBUTIONS TO METEOROLOGY, 
Reduced from observations taken at St. Martin, Isle Jesus, C. EH. 
BY CHARLES SMALLWOOD, M. D., LL.D., 
Professor of Meteorology in the University of McGill College, Montreal. 
These observations extend over the year 1859. The geographical co-ordinates 
are Latitude 45° 32’ North, Longitude 73° 36’ West, from Greenwich. The 
cisterns of the Barometers are 118 feet above the mean sea level. The results 
obtained are reduced from tri-daily observations taken at 6 A.M., 2 P. M., and 
10 P.M. These periods divide the day into three equal parts of eight hours 
each. The self-registering principle is applied to many of the instruments, and 
the usual corrections are also applied for temperature and any peculiarity in their 
construction. The readings are frequently verified, so as far as possible to insure 
accuracy. 
Atmospheric pressure.—The highest reading of the Barometer during the year, 
occurred at 4 P. M., on the 3rd of December, and indicated 30.726 inches, which 
is the highest reading on record here except one, which took place on the 8th of 
January, 1855, when the Mercurial column stood at 30.876 inches. The extreme 
height of December last, did not seem to extend very far East or West. The 
highest reading at Toronto, kindly furnished me by Professor Kingston, was 
30.392 inches, and at Quebec 30.563 inches. At Temple Grove, on the eastern 
slope of the Mountain, the residence of the Hon. Mr. Justice McCord, it attained 
a maximum of 30.865 inches, and these observations may be fully relied upon, 
