TABLE OF CONTENTS. xi 



(I.) FISHES. 



General : Geograpliical Distribution of Percoid Fishes, 291 ; Absence of 

 Fislies above the Yosemite Falls, 305 ; Alleged Shower of Fish-scales, 350. 

 Special : Blood Corpuscles of the Salmonidse, 299 ; Reproduction in the 

 Eel, 306 ; a Large Fish, 317 ; Habits of Black Bass, 322 ; Food of Basking 

 Shark, 328; New Scaphirhynchus from Turkestan, 336; Paddle-fish in 

 Chautauqua Lake, 342. See also Pisciculture and the Fisheries. 



(Ic.) ARTICULATES. 



Insects. General: Experiments on Aquatic Articulates, 292 ; Influence 

 of External Conditions on the Structure of Insects, 307 ; Lepidoptera : 

 Effect of Violet Light on Silk-w-orms, 27-4 ; Proper Temperature for Rear- 

 ing Silk-worms, 412 ; ControlUng Sex in Butterflies, 294, 329 ; Danais ar- 

 chippus near Melbourne, 308 ; Urania leilus at Panama, 337, 352 ; Distribu- 

 tion of California Moths, 330 ; Other Orders : Protective Fluid of Cymbex, 

 293 ; Do Flies Eat Pollen ? 293 ; Phylloxera, or Grape-vine Louse Insect, 

 293, 393, 421 ; Hibernation of Flies, 352. Crustaceans : Zoological Posi- 

 tion of the King-crab, or Limulus, 291 ; Habits of Craw-fish, 351. Entozoa 

 and Entophyta : Blood Entozoon, 295 ; Relation of Entozoa to the Grouse 

 Disease, 295 ; Entophyta in Man, 332. 



(1.) MOLLUSKS. 



Geographical Distribution of Land Shells in North America, 320 ; Terres- 

 trial Mollusks of the Bahamas, 333 ; Introduction of Land Shells into Scot- 

 land, 322 ; Shells of Rhode Island, 339 ; Nature of Ajjtychus, 334 ; Giant 

 Cuttle-fish in Newfoundland, 296. 



(m.) RADIATES. 



Agassiz's Revision of the Echini, 265 ; AUman on Tubularian Hydroids, 

 296 ; Pavonaria BlaJcei, 332 ; Fossil Corals of the West Indies, 340. 



(11.) PROTOZOA. 



Haeckel on Calcareous Sponges, 298. 



H. BOTANY (ciii) 353 



Floras : Botany of Norway as Affected by Ocean Currents, 99 ; of Island 

 of St. Paul in the Indian Ocean, 355 ; Ancient Vegetation of Great Britain, 

 371 ; Plants of Polaris Bay, 378 ; New United States Species in 1873, 375 ; 

 Canadian Fossil Plants, 378. 



Forests : Relation of Forests to Rain-fall, 70 ; to Temperature of Ground, 

 81 ; Influence of Forests on Ozone, 426 ; Forest Growth in the Wabash 

 Valley, 367. 



Publications : Sachs' New Text-book, 373 ; Completion of De CandoUe's 

 Prodromus, 379. 



Vegetable Physiology : Evaporation from Plants, 355, 862 ; Movement 

 of Sap, 360; Germination: Proteine -granules, and Asparagine in, 357; 

 Change in OH of Seed in, 360; Change of Temperature during, 360; Growth 

 of Plants: Influence of Atmospheric Pressure on, 372; of Electricity on, 

 373 ; Growth of Seedlings, 374 ; Fertilization : Cross-fertilization, 371 ; in 

 Grasses, 358 ; of Yucca, 362. Constituents of Plants : Lithium in, 366 ; 

 Composition of Withered Leaves, 380. 



General : Why the Winter of 1871-2 was Injurious to Plants, 353 ; Dis- 

 tribution of Seeds by Winds, 353; Preservation of Fleshy Fungi, 271. 



Particular Kinds of Plants and their Products : Atropine in Plants, 



