INDEX. 433 



Page. 



Lectures, List of, (i854-'55, 1855-56) 33 



' ' Insect Instincts and Tansformations' ' 137 



"Marine Alg;e" 87 



"Meteoric Stones" 151 



' ' Natural History applied to rarmin,g and G ardeaing 131 



' ' Oxygen and its Combinations' ' - 143 



' ' Planetary Disturbances' ' 17S 



Leidy, Jos., Assistance to 32 



Lenox, Jas. , Historical Papers in Collection of 307 



Lcpsiua, Work on Egypt i. 82 



Letherman, Jonathan, Sketch of Nav^ajo Indians. 283 



Letter of the Secretary to the President of the Senate and Speaker of the House. 3 



Lewis, Jas., Exchange of Shells desired by.-.l 57 



Libraries in Washington „ 3^ 



Library, a Bibliographer's Opinion, of 29 



Work done in, and Character of . 29 



Light and Heat of the Sun, Meech's Paper on 20 



Lightning, Observations on, by Mr. Mastermaa 265,280 



living Animals added to the Museum 49 



Lc^an, Tlios. M., Meteorology of California- 191 



Ludewig, H. E., Letter from _ 309 



Ludewig's Bibliography. SO 



Lunar Origin of Meteorites advocated 165 



Mammals, Specimens added to Museum 47 



Marcy, Capt. R. B., Survey in Texas 44: 



Ma6t<;rman, Stillman, Observations on Thunder and Lightning. 265, 230 



Measures, Diversity in Standards of 19 



Meech, L. W., Paper on Light and Heat of the Sun 20 



Meetings held in Building 15 



Meetino; of Board of Regents, Time changed 76 



Meigs, Capfc. , Avv-ard to Contractor of Building submitted to 74: 



Mejnbers ex officio of the Institution 6 



Meteoric Stones, Lecture on 151 



Description of Specimens 151, 172 



Analysis of Meteorites. - 152 



Number found in the World 155 



Lessons taught by 167 



Physical Characteristics of. 158 



Mineralogical Constitution of 158 



Points of similarity in - 160 



Great Divisions of. 160 



* Chemical Constitution of - 159,161 



Pteseuce of SchTciberaite in 161 



Limited Action of Oxygen on — - 161 



Origin of 162 



Shooting Stars not the Same 162 



Prof. Shepard's View of their Origin 163 



Generally received Theory of Origin 165 



28 



