CONTENTS. vii 
PAGE 
Invention of the Repeating Goniometer............... 160 
Malus a Candidate for the Academy of Sciences.—Situa- 
tions which he filled.—His Death. ................. 163 
Character of Malus.—Maxims and Precepts.—Suscepti- _ 
bility of Malus on Questions of Scientific Priority.... 167 
5 FRESNEL. “ 
Becliminary Motegi -is> i <-cs3n 2 dale apis aayere bie'e vs 171 
Infancy of Fresnel.—His Entrance into the Polytechnic 
School and into the Corps of Bridges and Highways.— 
His Deposition for having gone to join the Royal Army 
PEL Al allies etme abate Oeil e Bw Bid 0's ld ie! ble Sialdiher's aa Gila jebeie es 175 
Fresnel’s first Scientific Papers: ++++++-+++eseeereeees 183 
pA EE ee Pe eee ere re eT 186 
pS SS OE ee ee Peer ero irre See ee 9202 
PRIN MESS Px ah e%s ios ‘ole alain 8 adda he OE ADAM 217 
Principal Characteristics of the System of Emission and 
of that of Waves.—Grounds on which Fresnel was led 
to reject unreservedly the System of Emission------- 231 
Li ght-Hou ee ESUNS Ret Ty iy taka <a Gera xe'e oval aig’ @ oe wid @ seit ellele ates aa 263 
Life and Character of Fresnel. His Death........... 273 
THOMAS YOUNG. 
TN 5 5 os o's o's os 5 bao s oak ea On 280 
Birth of Young.—His Childhood.—First Entrance on his 
DIR RIMOE 5 ew 50k ooo on sy hse 6 cacvte) Wiese 282 
Theory MRR aa Sa u's wiw.via » 6.8 6 sidts Gaantie.aiy. 0 en eae ae 291 
LN ie <5 55 « ba as hn 9 he od vee.Beigie tay 298 
Egyptian Hieroglyphics—History of the first Exact In- 
terpretation given of them...............0..ee0 00 313 
SS a ee a 325 
Miscellaneous Works of Dr. Young: ---+-+++++++eseees 329 
