OPTICS, AND ACOUSTICS. 





INTRODUCTORY NARUATIVK 



LESSON 1. 



'I in old shire town and royal burgh 

 of Jcdburgh, which is situated on tin- 

 Jed water, in Roxburghshire, was 

 formerly celebrated for its bold 

 strong castles, woodland 

 and splendid ecclesiastical builu 

 some of which koned the 



.nid, as the ruins of 

 Jedburgh Abbey now t> st;I\ . I 



of science, it possesses an addi- 

 J iiiti-rest, from l-ii)!: tlu- >)irth- 



