INDEX 217 



of a great Treatise on Chemistry applied to the 

 Arts. 



FREMY, EDMOND, French chemist, born at Ver- 

 sailles in 1814, died at Paris in 1894. Author of 

 remarkable researches relating to the fatty acids. 



GU^RIN, JULES RENE, French surgeon, born at 

 Boussu, Belgium, in 1801, died at Hyeres in 1886. 



HAUY, ABBE RENE JUST, French mineralogist, 

 born at Saint- Just, Oise, in 1743, died at Paris in 

 1822. He founded the science of crystalography. 



HELMHOLTZ, HERMANN VON, German physiolo- 

 gist and physicist, born at Potsdam in 1821, died 

 at Charlottenburg in 1894. Author of remarka- 

 ble works on optics, electricity and acoustics. 



HERSCHEL, SIR WILLIAM, celebrated astronomer, 

 born in Hanover in 1738, died at Slough, near 

 Windsor, in 1822. He was the founder of the 

 science of stellar astronomy. 



JOLY, NICOLAS, French zoologist, born at Toul 

 July llth, 1812. Author of numerous works, in- 

 cluding Researches in Regard to Silk Worms and 

 Their Diseases, 1858 ; Researches into the Origin, 

 Germination and Fructification of Brewer's 

 Yeast. 



KOCH, ROBERT, German physician and microbiolo- 

 gist, born at Klausthal, Hanover, in 1843. He 

 has published remarkable researches in tubercu- 



