pognal os known as ‘“Piummets,” 
Poa respiration in, 244. 
Mi ire pe of solid OE oT 316. 
Acer nigrum Wi theory 
e Institute, 783 
ig 
Altinism, 
Albino deer, 773. 
Alca impennis, 368. 
Amb e flora of a ie big 
ati va 
: t of Science, 318, 378, 4 
509. TS. President’s ‘Address, 5, 
butterflies, : 
Entomolo 
T W oie work on, 191. 
TERROR of, 354. 
t, 39. 
Am 
Amphipienra pe pellucida as a test object for 
æsthetic school, 431. 
_ Anguilla, species of, 449. 
: Animals, effects of extraordinary seasons 
on the distribution of, 671. 
INDEX TO VOLUME VI. 
Birds’ eggs, instructions for preparing, 281. 
eae ssil in New Zealand, 312. 
aw irian, 694. 
cM fag, al 38. 
a ae i 
N. A., geographical variation of, 
the Gr eat Salt Lake Me g ei 
gi karo Marias and ie 
oe 
Black Bear. i 1. 350 
Blind Crawash, vine 494 
nianon of, 20 
eyes 
ot mentioned, 10. 
parasite on, 29. 
Faonitiee papille of, 17. 
young of, 116. 
fis heg ai Mammoth Cave, 6. 
Silur: 
Blood-cor 'puscies, 1 ph 317, 56s 
parative size of, 245. 
iations in size of, 242. 
Blood-dises, size of.. 243. 
Bonasa Jobsii, 172, 300. 
Boomerang, 701. 
Botanical notes, ~ 
á 
; 
w, 636. 
Botany for young paola +75. 
Animals < a Wyandotte and Mammoth forty years ago, 485. 
Caves, list of, 409 Bowlders in a oats 
Ano} picks’ ris i Bracon letifer, 599. 
earn 421. Branchiostoma, ey! 
rass, how to blacken, 
Anthropological’ Taanit oot N > 103. Breathing pores of leav 
Se eenry of man in Ameri n 378. itish Association for rae of 
peepee Sayanus, ience, 712. 
phenomena of ‘the prairies, 133. | Bud scales, office of, er 
Aue Island, geology of, 518, sit, 751. | Buffalo. former range of, 79. 
rachnactis » young Pot Edwa rdsia, Butterflies, embryonic larvee of, 169. 
ceuthobium reat loa! of Iowa, i me 
orl a woal of the new new cata A 
mee of, 4 w Scudder’s revision of, 354. 
: _ Archxolo ada an lary Butterfly, Boros sg 5 of, 513. 
_ Asple enim . filix fæmina, uae American w fossil, 179, 
variety of, 
Azores, flora A fauna of, 176. 
Cæcidotea microcephala, 411, 419. 
usculus, e. of, 473. | Calculi from the ec of a horse, 552. 
young s California, geology of, 1 
oe i Californian Trivia, 732. 
ing in, 707. SO, 
pired mery pellu Da” 
Bassaris astuta a Ohio, 363 
geographical distribution 
: poon radians, 251. 
J zF 
I Microscope, 322 2. 
bees in Catskill Mountains, 47. 
carpus and tarsus of, 631. 
hay 
Canada, fossil plan 
Cancerous $ deposits, get; of, 501. 
Capillary circulation, mode of observing, 
carbomife rous — of Ohio, 46. 
Carpenter-bee, 721. 
cored Mountains, birds of, 47. 
Caulo: on s, 411, 420. 
cave th ., Penn -; 238. 
