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SIR W. CROOKES ON THE PHOTOGRAPHIC SPECTRA OF METEORITES. 
Examination of the Arc Spectra of Thirty Aerolites. 
List of aerolites thus far examined :— 
L’Aigle (from Orne, France). 
The photographed .spectrum of this aerolite extends from X 2973 to X 5896, 
and includes in addition to the lines of iron 2 aluminium, 1 calcium, 23 
chromium, 3 magnesium, 3 manganese, 27 nickel, 2 potassium, 6 sodium. 
Alfianello (from Brescia, Italy). 
The photographed spectrum extends from X 3018 to X 6643, and includes in 
addition to the lines of iron 1 aluminium, 2 calcium, 23 chromium, 2 
magnesium, 3 manganese, 40 nickel, 6 sodium. 
Aubres (from Nyons, Drome, France). 
There was great difficulty in maintaining the arc. The photographed 
spectrum extends from X 2507 to X 5896, and contains in addition to the lines 
of iron 10 chromium, 6 magnesium, 3 manganese, 6 nickel, 4 silicon, 2 sodium. 
Baroti (from Bilaspur, Simla, Punjab, India). 
The photographed spectrum extends from X 2851 to X 5896, and shows in 
addition to the lines of iron 2 aluminium, 2 calcium, 25 chromium, 2 
magnesium, 3 manganese, 2 potassium, 4 sodium, 38 nickel. 
Barratta (from Deniliquin, New South Wales). 
The photographed spectrum of this aerolite extends from X 2853 to X 5206, 
and shows in addition to the lines of iron 2 aluminium, 2 calcium, 26 
chromium, 3 magnesium, 3 manganese, 29 nickel, 2 sodium. 
Bustee (from India). 
This aerolite behaves in a very similar way to El Nakhla el Baharia, and it 
was only possible to obtain one photograph. Very few lines were found, and 
these were chiefly those due to chromium and magnesium; the lines of nickel 
cannot be seen. In addition to the lines of iron the following were identified 
between X 2852 and X 4289, 2 calcium, 10 chromium, 6 magnesium, 3 
manganese, 2 sodium. 
Chandakapur (from Berar, India). 
This is a very rare aerolite, and as I had only 2'184 grm. of the material 
very great care had to be taken in obtaining the spectrum. 
The photographed spectrum extends from X 2507 to X 6643, and contains in 
addition to the lines of iron 1 aluminium, 3 calcium, 36 chromium. 7 
magnesium, 3 manganese, 43 nickel, 6 silicon, 6 sodium. 
Chantonnay (from Vendee, France). 
The photographed spectrum of this aerolite commences at X 2551 and 
extends to X 5896, and contains in addition to the lines of iron 2 aluminium, 
