, 1873-08-25

SECTION u.
Frod Putnam called tho Section to order, md
called OIL DR.. !.oCoultor, Of Philadelphia, to pre-
hlr. samuel sculdcr, of PHILADELPHIA was
called to act as temporary Sec:otary.
Tho temporary organization was then mado
permanent.
DR.. F. B. HougI, DR.. Theodore Gill, and Prof
yorri1l wore elected membcrs Of tho Sectional
Committee,
Tho following Committee, to act with the Con
eral COMMITTED i'll Tho nomination OF officers,
Townsend, aud prof. Swallow.
TArEnS READ.
The first papor read was by Prof. F. ". Put
NAM !" Notes on LopariB and Cycloptorns and
Their Allios." 1t was presented in nn able aud
At hand.
Prof. T. Story Hunt, OF Boston, then rcal
paper on "Nolea Oh tho Geology and Economic
A1inoraiogy Of the SOUTHEASTERN Appaacl,!ns,"
Tho author began with o brief skotch Of the
physical geography Of tho mountsil-rogion
which borders on the southeastern s;tlo of the
Appalachian Valley, from Southern Virginia to
Northern Georgia. Tho prevalence ovor much
noticed, and thoir character dosoribed, Tho
drift phonoinoua Of tho north aro here unknown,
and the rocks retain their original positions, but
sS csnsa ws Ihe atr' of Of shs
Sli9 dry IL sfs dataH' hs WY qadf lad tho 81; sn,ar
| rocks in New England escaped tho sa1no
] changes? The author thought the change lad
| boon produced before the erosion Of tile glacial
poEiod. From tue ssnorthern rocAn tue traces havo
been swept aspy, while tLoBo OF the south es-
capped such action, being beyond tho limits of tho
| glaciers. But tho author was NOT absolutely u.s.
eurod on ahls point, merely profelriug this viov
to eortain otlers. After deacribing the mineral
deposits OF thoae Appalachian rooku, DR.. Hunt
called attention to thoir great cconnnic valne,-
| especially to tho phosphates Of South Carolina
tho coppor-doposita at Duchsown Tenn. the
vast beds Of pylitee available for tie mantfac-
+! taius of the Rlue Ridge This papor elicitcd
considerable discussion.
The third paper pFcsentod, was prepared by
hlr. Ihon'as Moehau. mud rcad III his absence by
tho Secretary: On Horuaaphrodism in Thus
Cotnus (the nnst-Treo) md in Rhue alabra
| Common 6umao)." NhuB Cotlnun is gonorully
regarded as herniaphrodito. Doocubus, referring
to it, usually Hays 1t ia 80. Mr. Mochan had
found 1t, from lArge exporienco, locidnous. It
| our chief acquaintance with it through cultivated
| apecimoun. Tho female form ia best known.
| One original plant probably furnished most Of
those in cultivation. soods, probably from Wild
distributed by German seods1non, aud to those
seedlings this paper rolates. 1n tho nlalo
lowors, the gynncium il almost wanting,
while tho etamenB aro fully developed,
and tho flower iB nearly double tue natural Blzo
| of tho fomnlo tloworB. Tlleso aro amallor, aud
have tho merest rulimonts OF piBtls. Tho
sA1iat" is ouly produced to my extont BY tue
female flowors. Another mattor Of ilatorest II,
TINT, III some vigorous developments, two cupos,
and occasionally three, will DO developed from d
atnglo tlowor,in tho lattor caso forming trim
! gular capsule. This iB very raro. In moat plants
which have . hermnphrodlto appearance, but are
practically desiduous. tho rolatiyo longth OF the
stanlons and pBtB vary III tie desoerphio con
titiona. In tic ono caAe, the truly foulalo, the
pistila ate lopgor than tho stamonH and the
Btan,onB arc longor III tho 1nGlo. 1n Nhus Qlabra
there is a forn considered lofmaphrodite. Tho
pihtillnto plants Of lshus Gla1ra. also, arc 6oY
oral days la.er In coming into bloom.
i papar on "Solne Extinct TypeB Of Hornot
Periaaodactylos,' prepared by Prof. Edward q
Cope. WAS Yead iii his nbHonce by Mr.. Gill. i
will 6o known that tho type Of Alannaalla of thu
prtgont period Which il pro"emlinent!y character
lied by the proBenco OF oBBoolls horna is that o
tho ArtiodWtYla Rumnuutin. The horned nlnul
nlalB of our ooeono poriod nro most rarey alliet
to tho protascidiatu. 1ll0 pcrisA0dactylos 0
tho intermediate formation OF tho mlocono ON
braoo aevoral Eruna and apoeio6 OF horned K.nt
not very unlike thu 1.oxolophorla a,sd Militia
| thertu1n III tl,or horned arnlattlio. I'1e rhpo
continued tle discussion OF tins subJoct at con
4 papor s'0n tho Natlo OF Increase in th'
Human NAcc, with Its Uoaring on tho Date o
lta ORIGIN" by Charles Whittoaoy, wna road i!
his abscnca by the Secretary. This inycaiyn
tion was commenced In order to find tho go1lera
rato If hlcreaas during tho historical period, an
to tioduce q aeres which, traced backward, woul
iudioats the tillso Of ita origin. Tho celsus o
statistical account OF tho curly population
found to bo 80 lofootiyo that u ,nathematiou