310 Fusion- Structures in Meteorites. 



tions cut through such globules farmed on the cooling of the 

 mass from fusion, a fact on Avliicli rests the appellation. Fusion- 

 structures, which I assigned to them. 



Finding these fusion-structures alike in terrestrial igneous 

 formations and in meteorites, we are led to consider another 

 very interesting circumstance. . 



Terrestrial rocks, whose method of formation is well known, 

 differing from one another in several features, yet all owing 

 their bii'th to the same 'physical forces, exhibit certain remark- 

 able and distinctive structures in their'formation. 



Extra-terrestrial bodies, meteorites, in many cases analogous in 

 composition' to the former, show with great frequency these 

 identical, distinctive structures. 



The conclusions to Avhich these facts lead are obvious. There 

 is no accident in nature : like causes, under like conditions, pro- 

 duce like effects. 



The structures in the rocks examined, were found to be sec- 

 tions through globules, which globules were produced on cooling- 

 after fusion ; the structures in the meteorites are identical with 

 the structures in the igneous rocks ; therefore, they too must be 

 the result of the cooling after a state of fusion. 



That these globules in meteorites could not have been formed 

 during the partial fusion that such bodies experience in passing 

 through the envelope of 'air surrounding the eai'th, has been 

 proven by the facts previously stated (pages 299 and 300); there- 

 fore, plainly and unmistakably, these structures, these records 

 in stone, bear evidence that fusion and subsequent cooling must 

 have formed a chapter in the history of those worlds of which 

 these meteorites are but the scattered fraa-ments. 



