184 " ON FLUID CAVITIES IN METEORITES." 



It is not improbable that meteorites may yet be found contain- 

 ing minerals differing from those already described, but when 

 such discoveries are made they must be substantiated by the 

 strongest evidence, including chemical analysis. 



Until then, and in the present state of our knowledge, any 

 specimen containing quartz or phenacite must be regarded as presum- 

 ably of terrestrial origin. 



Taking all the above facts into consideration, one is justified in 

 believing that Mr. Hensoldt's theory and conclusions are erroneous. 



