684 



GENERAL INDEX. 



Conularia wilkinsi 609 



Copper— Oxidation of electro- 

 lytic 76 



Crania anna 607 



Cyclograptus, genus 592 



" rotadentatus 592 



Cyrtoceras reversum 610 



Decoration — Prehistoric 16 



Dendrograptus, genus 566 



" dawsoni 56S 



" frondosus 568 



" novellus 570 



" prsegracilis 569 



" ramosus 567 



•' simplexr 567 



" spinosus 569 



Description of Genera and Spe- 

 cies of Niagara Graptolites. . 565 



Dictyonema, genus 572 



" expansum 575 



gracile 574 



" pergracile 577 



" retiforme 573 



" splendens 577 



" tenellum 576 



" websteri 576 



Dictyostoma reticulatum 601 



" undulatum 602 



Discina clara 606 



Drift deposits in the Illinois val- 

 ley 79 



Earthquake of 181 1 at New Ma- 

 drid 85 



Earthquake of Nov. 18, 1878 . . . 35 



Earthquakes, periodicity of IJ3 



Eclipses of the Almagest wrong 



in date ;?6' 



Electric-light systems 47 



Electrolytic copper, oxidation of 7G 



Elephant's milk G6 



Exartema monetiferanum 317 



" ferrugineanum 317 



Fenestella bicornis 604 



Formic acid 627, 633 



Fossils of Eastern Kansas 482 



Geological distribution of Grap- 

 tolites 



Geyserite from the Yellowstone, 



analysis of 



Glauber, J. Rudolph— Works of 

 Gold and silver alloys — A me- 

 thod of quickly determining 



approximate value 131, 



Grapes, wild — of the U. States. 



Grapholita gallse-saliciana 



" olivaceana 



Graptolites, Bibliography 



" Catalogue of species . 



" Classification 



" Genera of Niagara. .. 

 " Geolog'l distribution. 



" Occurrence 



" Reproduction 



" Structure 



" Synopsis of Genera. . 



" Zoological affinities. . 



Graptolithus clintonensis note. 



55S 

 67 



320 

 320 

 557 

 564 

 561 

 563 

 558 

 556 

 560 

 559 

 561 

 559 

 564 



Heat developed by a pile-driver 5S 

 Henry, Jos.— death announced. 19 

 Hot springs of Colorado 71 



Immigrant insects 51 



Inertia ring— Constants deter- 

 mined S6 



Inocaulis, genus 583 



" bellus 585 



" cervicornis 587 



" diffusus 586 



" divaricatus 585 



' ' phycoides 588 



" plumulosus 584 



" problematicus 586 



" ramulosus 588 



" walkeri 585 



