302 



INDEX 



*Laney, F. B. The relation of bornite 

 and chalcocite in the copper ores 

 of the Virgilina District of N. C. 

 and Va., 36 



Larsen, E. S. Hinsdalite, a new 

 mineral, 25 



*Le Clerc, J. A. Translocation of 

 plant food and elaboration of plant 

 material in wheat seedlings, 123 



*Leith, C. K. Geology of the Lake 

 Superior region, 157 



*Lembkey, W. I. Fur-seal fisheries in 

 Alaska in 1910, 289 



*McCatjghey, W. J. The color of soils, 

 86 



*McGee, W J Soil erosion, 161 



*McLatjghlin, A. J. Sewage pollution 

 of interstate and international 

 waters, with special reference to 

 the spread of typhoid fever, I. 

 Lake Erie and the Niagara R., 99 



*Marsh, M. C. The fisheries of 

 Alaska in 1910, 42 



*Meek, S. E. Recent biological ex- 

 plorations in Panama, 291 



*Meinzer, E. O. Geology and under- 

 ground waters of southern Minne- 

 sota, 237 



Menge, G. A. Some new compounds of 

 the choline type, 223 



Merwin, H. E. A method for deter- 

 mining the density of certain solids 

 by means of Rohrbach's solution 

 having a standard refractive index, 

 52 



Quartz and fluorite as standards 



of density and refractive index, 59 



The temperature stability ranges, 



density, chemical composition and 

 optical and crystallographic prop- 

 erties of the alkali feldspars, 59 



*Middlekauff, G. W. A new form of 

 direct-reading candle-power scale 

 and recording device for precision 

 photometers, 34 



Miller, J. M. Determination of the 

 international ampere in absolute 

 measure, 211 



*Moffit, F. H. Geology and mineral 

 resources of the Nizina District, 

 Aka., 130 



*Moore, H. P. Condition and extent 

 of the natural oyster beds of Dela- 

 ware, 97 



*Motter, M. G. Digest of comments 

 on the Pharmacopoeia of the U. S. 

 of A. (8th decennial revision) and 

 the National Formulary (3d ed.) 

 for the calendar year ending Dec. 

 31, 1908, 98 



*Munn. M. J. Coal, oil and gas of 

 Foxburg quadrangle, Pa., 209 



* Foxburg-Clarion, Pa., Folio, 209 



* Geologic atlas of the U. S. Folio 



no. 177. Bargettstown-Carnegie 

 folio, Penn., 237 



* Oil and gas fields of the Carnegie 



Quadrangle, Penn., 237 



* Sewickley, Pa., folio, 183 



Mtjnroe, C. E. The consumption of 



the commoner acids in the U. S., 70 

 Nutting, P. G. Helium tubes as light 



standards, 221 

 *Page, L. W. Progress and present 



status of the good roads movement 



in the U. S., 136 



*Paige, S. Mineral resources of the 

 Llano-Burnet region, Tex., with an 

 account of the pre-Cambrian 

 geology, 271 



*Parker, G. H. Effects of explosive 

 sounds such as those produced by 

 motor boats and gunshots, upon 

 fishes, 241 



*Patten, H. E. Effect of a second 

 solute in adsorption by soils and 

 in leaching of soluable salts from 

 soils, 87 



* The relation of surface action to 



electro-chemistry, 85 



-The solubility of lime in aqueous 



solutions of sugar and glycerol, 86 

 *Peters, W. J. Magnetic chart errors 

 and secular changes in the Indian 

 Ocean, 178 



