THE MICROSCOPE 



NOVKNIBKR, 1894:. 



Number 23. 



New Series. 



Objects Seen Under the Microscope. 

 Sand Grains and What We May Learn From Them. 



By WILLIAM MACKIB, 



ELGIN, ENGLAND. 



If we were to take 100 grains of sea saud from the 

 seashore, and examine them under the microscope, with 

 the view of determining their characters, we should prob- 



ably find that, out of that number, 86 were quartz grains, 

 perhaps about 6 felspar, perhaps 2 garnet, perhaps 1 mica 

 and the remaining 5 indefinite, consisting possibly of 

 quartz or felspar stained past recognition with oxide of 

 iron (rust), chips of schistose rock, and others of whose 

 characters perhaps no opinion could possibly be given. 



