INDEX TO VOLUME I. 



ii71 



"Nail Head Spar" (calcite"), 116. 

 New CetiStal Forms of calcite, 118. 

 of cerussite, 129. 

 of azurite, 147. 

 Nitric Acid, effect on liberation of iodine 



from solutions, 27, 30. 

 North American Mosses, Analytic key to 



tbe genera and species of, 157. 

 North Rakge of the Baraboo Bluffs, rocks 



of, 35. 

 Oregon Diamond, 153. 

 Organic Acids, effect on liberation of io- 

 dine from mixed solutions, 27. 

 Ostwald, cited on cleaning of glassware, 4. 

 cited on influence of certain 

 acids on speed of reduction 

 of bromic acid by hydriodic 

 acid, 3;{. 

 Phenccetsts in quartz keratophyre. 

 feldspar, 48. 

 quartz, 49. 

 Pierce County Diamonds, 153. 

 PrvoTS, determination of irregularity of, 



in " Broken " transit, 75. 

 Platteville, Wis., galena from, 127. 



sphalerite from, 133. 

 Poikilitic Structure, in quartz kerato- 

 phyre, 51. . . , . , 

 Pole Star, determination of time and 



azimuth from, 81. 

 Potassium Chlorate, speed of liberation 

 of iodine in mixed solutions with potas- 

 sium iodide, 1. 

 Potassium Iodide, speed of liberation of, 

 in mixed solutions with potassium chlo- 



■pa tfi f*i".0 1 



Practical Astronomy, studies in, 57. 



Pumpelly, Raphael, cited on Wisconsin 

 minerals, 110. 



Pyrite, from southern Wisconsin, 144. 

 from Milwaukee, 150. 



Pyeolusite, reported from southern Wis- 

 consin, 115. 



Quartz, from Devil's Lake, Wis., 111. 



Quartzite of Baraboo region, 39. 



Quartz Keratophyre. On the, and asso- 

 ciated rocks of the north range of the 

 Baraboo Bluffs, 35. . , „ 



from Miihlenthal Harz, analysis of, 48. 



from Pigeon Point, Minn., analysis of, 



48- 

 from Mt. Elizabeth, Australia, analy- 

 sis, of, 48. 

 , from Baraboo region : 



areal extent, 39. 



the contact, 40. 



absence of bedding, 42. 



various types, 42. 



petrologic character, 43. 



microscopic characters, 46. 



analyses of, 47 



feldspar phenocrysts in, 48. 



quartz phenocrysts in, 49. 



Eau, E. a., acknowledgments to, viii. 



Reduction of level readings, 57. 



Refraction, atmospheric, a simple but ac- 

 curate expression for, 60. 



Refraction, corrrection of the sun s dec- 

 lination for the effect of, 64. 



Renauld, cited on Kindberg's new species 

 of mosses, v. 

 , cited vi. 



Rocks of the Baraboo Bluffs, 35. 



Sadebece, cited on twinning'in Galena, 126. 

 cited on niarcasite, 141. 



Sandstone of Baraboo Region, 38. 



Schlundt, Herman, On the speed of the 

 liberation of iodineiin mixed solutions of 

 potassium chlorate, potassium iodide- 

 and hydrochloric acid (title of paper), 



Seeicite Schist of Baraboo Region, 44. 



Shullsburg, Wis., pyrite from, 144. 



sphalerite from, 132. 



SiDERiTE, from southern Wisconsin, 115. 



Simultaneous determination of flexure, 

 inequality of pivots, and value of a local 

 division in a " broken" transit, 75. 



Skinnee, E. B., analysis of sphalerite by, 133. 



Smithsonite, pseudomorphs after calcite 

 from Mineral Point, 121. 



Speed of libeeation of iodine in mixed 

 solutions of potassium chlorate, etc., 1. 



Sphaleeite, from southern Wisconsin, 132. 

 from Milwaukee, 150. 



Spheeulites of quartz keratophyre, 52. 



Spheeclitic Structure, in quartz kerato- 

 phyre, 52. 



Spirit level, determination of the angu- 

 lar equivalent of one division of a, 68. 



Strong, Moses, cited on minerals of the 

 Wisconsin lead region, 110. 



Studies in spherical and practical astron- 

 omy, 57. 



Sulphueic ACID, effect on the liberation of 

 iodine from mixed solutions, 27, 30. 



Sun, correction of declination for refrac- 

 tion, 64. 



Swan, C. W., acknowledgments to, viii. 



Telescope, to focus, 58. 



Theses, at University of Wisconsin. Pa- 

 pers by Herman Schlundt (pp. 1-33) and 

 Samuel Weidman (pp. 35-56.) 



Time and Azimuth, determination of, 

 from transits over the vertical of the pole 

 star, 81. 



Time and latitude, determination of, from 

 equal altitudes of stars, 94. 



True, R. D., cited on Kindberg's new spe- 

 cies of mosses, v. 

 cited on the revision of Di- 



eranimi, v. 

 acknowledgments to, viii. 



Types of Ceystals, of azurite, 146. 

 of calcite, 115. 

 of cerussite, 129. 

 of marcasite, 138. 



Van Hise, C. R., acknowledgments to, 35, 

 111. 



, cited on the rocks of the Baraboo 



bluffs, 36. 



, cited on Wisconsin minerals, 110. 



Volcanic Breccia of Baraboo region, 44, 

 56. 



Weidman, Samuel, on the quartz kerato- 

 phyre and associated rocks of the north 

 range of the Baraboo Bluffs, title of 

 paper, 35. 



Welsh Settlement of Iowa Co., Wis., 

 barite from, 137. 



Williams, G. H., cited on poikilitic struc- 

 ture, 51. 



Wisconsin, a contribution to the miner- 

 alogy of, 109. 



Wittran, cited on formulae and tables, 

 106. 



Yellowstone, Wis., galena from, 123, 126. 



Zircon, in quartz keratophyre, 50. 



