ON THE SUN'S HEAT. 417 



might mistake for a macadamising stone, but 

 which was actually travelling through space till it 



fell on the earth at Fossil, in the neighbourhood of 

 Glasgow, on April 5th, 1804 ; or like that (Fig. 51) 

 which was found in the Desert of Atacama, in 



collection, that by Fig. 51 in the Eck collection, and that by Fig. 52 

 in the Lanfine collection the scale of dimensions is shown for 

 each. It may be remarked that Fig. 51 represents a section of the 

 meteorite tal<en in the plane of the longest of three rectangular 

 axes; the bright markings being large and well -formed crystals of 

 olivine, embedded in a matrix of iron. In Fig. 52 is depicted the 

 beautiful Widmanstatten marking characteristic of all meteoric iron, 

 and so well shown in the well-known Lenarto meteorite. 



VOL. I. E E 



