INDEX OF VOLUMES I TO XX. 85 



N teS ' VOL. PAGE 



of E. A. Ilelmuth von Kiessenwetter and S. C. Snellen Van Valen- 

 hoven; A Gramme-Machine; Death of W. Artus; Spontaneous 

 Ignition of Silks ; Temperature of the Sun ; Death of General 

 W. Munro ; French Protection of Birds ; Decrease of Adulteration 

 in England ; Death of Dr. Boisdoval xvii 288 



Dreams ; Forest Observations in France ; Death of Dr. L. Moser ; 

 Scarlet Fever distributed by the Milk-Supply ; New Balloon ; Death 

 of J. C. Ward; Hailstones Ten Inches in Circumference ; Death of 

 Karl von Seebach ; Scientific Association in Algeria; Boyd Daw- 

 kins's American Lectures; Large Lump of Solidified Mercury; One- 

 Toed Hogs and Deer; Death of Thomas Ball; Unsanitary Con- 

 dition of the Riviera ; Death of A. J. Morin ; Sieinens's Experi- 

 ments with Electric Light on Vegetation; Death of Dr. William 

 Sharpey xvii 431 



Death of W. K. Kedzie ; Soundings of Niagara River ; Death of G. 

 J. Mulder ; Death of N. Zinin ; Johns Hopkins Summer School of 

 Zoology ; Second Specimen of the Archaeopteryx ; M. Chevreul ; 

 Gelose; Death of D. T. Ansted; Fertility of Hybrids; Death of 

 W. Schimper ; Death of R. H. C. C. Scheffer xvii 576 



Correction ; Transmission of Tubercle ; Nickel in Norway ; Fiftieth 

 Annual Meeting of the British Association; Meeting of the Swiss 

 Natural History Society ; Death of A. S. Taylor ; Meeting of the 

 French Association, 1880 ; Introduction of Foreign Insects and 

 Plants ; Death of C. A. F. Peters ; Death of W. H. Miller ; Varia- 

 tions of Color in Canary Birds; Schliemann Collection of An- 

 tiquities; Albert Medal to Dr. J. P. Joule; Death of Dr. P. 

 Broca; Death of G. J. Mulder; Monthyon Prize to C. Flammarion; 

 Whymper's Discoveries ; Absence of Survey during Nordensk- 

 jold's Expedition ; Wheat discovered by Schliemann ; Efficiency 

 of the Electric Light ; Sulphide of Carbon as a Cure for Phyl- 

 loxera xvii 719 



Spanish Mackerel in the Chesapeake; Death of E. B. Andrews; 

 Effect of mixing White with other Colors; Society of American 

 Taxidermists ; Death of A. J. Meyer ; Solid Sulphuret of Carbon ; 

 Death of C. W. Borchardt ; Explanation of Erection of Primitive 

 Stone Monument; Telephone Reports; Sensitiveness of the Eye ; 

 Death of M. Lissajons; Appreciation of Sanitary Conditions in 

 Boston ; Color Decoration of Common Gray Stone-ware ; Death of 

 Count Pourtales ; Monkeys in the West Indies xvii 863 



Glacier in White Mountains; Fixedness of Characters of Plants; 

 Death of Benjamin Peirce ; Germs in Disease ; Ansemia ; Contents 

 of an Ostrich's Stomach ; Perforation of Rocks by Sand ; Death of 

 C. T. Jackson ; Decrease of Primitive Inhabitants of New Zealand ; 

 Tay Bridge Disaster; Insects and Strong Chemicals; Death of S. 

 S. Haldeman ; Burial-Mounds in India ; Flickering of Gas-Lights ; 

 Cythera; Artificial Production of Spinelle ; Land-Snails in Yezo, xviii 143 



Water-Traps and Sewer-Gas; Financial Advantages of Sanitary Ad- 

 ministration of Towns ; Seats for Saleswomen ; Ytterbium ; New 

 Remedy for Neuralgia; Lake of Tiberias; Coloring-Matter of 

 Flowers; Hydraulic Cement from Slag of Blast-Furnaces; Forma- 

 tion of Fat; Training Monkeys ; Gout induced by Lead-Poisoning; 



