vi CONTENTS OF VOLUME VI. 
Nature of Diatoms, p. 684. Office of Bud Scales, etc., p. 685. Seeds as 
Projectiles, p. 685. Alpine Flowers, p. 686. Fertilization of Yucca by a 
Moth, p. 765. Trees and Rain, p. 766. Acer nigrum with Stipules, p. 767. 
A apia eed New to our Coast, p767. 
hipaa — Carboniferous Reptiles of Ohio, p. 46. Note on the Prairie 
Ornithological Query, p. 47. Birds found Breeding in the 
Catskill — p- 47. Fishes as Surgeons, p. 48. A Sea Bird inland, 
: 49. Hemirhampus Richardi? p. 49. Occurrence of the 
Orchard panes in South Carolina, p. 49. Tulip Trees Destroyed by 
Bark Lice, p. 51. Instinct or Reason in the Robin, p. 52. Laboratory for 
arn Zoology, p. 52. Hybrids, p. 53. The Etheostomoids. Jllustrated. 
09. Butterfly Notes, 1871, p. 115. Iowa Butterflies, p. 116. Young 
= the Blind Fish, p. 116. Se eo Warmed by a Lizard, p. 168. Flying 
Spiders, p. 168. Embryonic Larvæ of Butterflies, p. 169. Propagation of 
Salmon, p. 170. An Ornithological Aaa p. 172. Albinism and Mela- 
nism, p. 173. Dredgings in the Gulf.of St. Lawreuce, p. 174. The Origin 
of Insects, p. 174. Change in the Habits of a Bird, p. 175. Reproduction 
of Sturgeon, p. 175. Partial Development of Eggs without Fertilization, 
p. 176. Floraand Fauna of the Azores, p. 176. Circulation in Insects, p. 
178. Note of Icterus Baltimore, p. 234. Note of Rana pipiens, p. 234. 
Disappearance of the Colorado Potato Beetle at Niles, Michigan, p. pesi 
Affinities of the Kingcrab, p. 235. Respiration of Fishes, p. 235. 
Great Northern Shrike and the English Sparrows, p. 236. Peouliat color 
ation in Fishes, p. 237. Duration of Life of the Danaus signs dtl pe 
American Leeches, p. 238. The last of ‘‘Bonasa Jobsii,” p. 300. Orr jui 
logical Blunders, p. 303. Vibrations of the Tail in Snakes, m 304. The 
Affinities of‘Crinoids, p. 305. Birds New to the Massachusetts Fauna, p- 
306. Error in Darwin’s Origin of Species, p. 307. Parthenogenesis among 
Lepidoptera, p. 308. Naturalization of Salmonide, p. 808. Curious 
Habits of a Snake, p. 309. More about Singing Mics. p. 809. The Music 
of the Rattlesnake, p. 310. Melanism, p..310. A Rare Animal, p. 362. 
Geographical Distribution.of Bassaris astuta, p. 364. Colorado Potato 
Beetle, p. 3864. Singing Maryland Marmot, p. 3865. The Position of the 
Centre of Gravity in Resecté: p. 366. Occurrence of the Scissor-tail Fly- 
) 68. 
` Great Auk, p- 368. Activity of Trout and Salmon, p. 369 he Carolina 
eae . 3869. Pouched Rat (Perognatus PERE: p. 369. 
Bird New to Acted United States, p. 370. The Nest, Eggs, and Breeding 
Habits of Harporhynchus crissalis, p. 370. Intelligence iy Monkeys, p 
371. New Birds in Southern Illinois, p. 430. The Anæsthetic sekóal. 
p. 431. Microlepidoptera, p. 432. On the Occurrence of a near Relative 
of Ægiothus flavirostris, at Waltham, Mass., p. 433. A Spike-horn Mule- 
deer, p. 434. Economical Entomology, p. 435. On the Occurrence of 
Setophaga picta in Arizona, p. 436. Zoological Nomenclature, p. 436, 
The Gregarious Rat of Texas, p. 487. Notes on Cemiostoma, p. 489. e 
Rattle of the Rattlesnake, p. 490. Venomous Fish, p. 491. Vitality of 
