, 1875-05-01


Tho ran1rhor Of commerce IN chisay derived
frotu tho Camphora et7cinort.n1, trce Of lhe
Laurel family (I1dnracer} That grows III China,
Japan, Formoaa, aud Cochtucsina. It is OBJ
tAiucd from tho wood by lstflnsion. Tho
Drtsiah Vice Consul As Tnn,Auy and Kolnng, In \
lato report doscribo1 tas Eroccsn Of diet,|lstion
in thai region ~ d hazardous traae, on account
NJ tho hostility Of tho alorigfnos. who rcsont
tho continual encronclnlents upon their tor
ritorv ter the purpose Of cutting down the trees
TO extract tllo camphor. M ynnns trccH aro
planted to raplaco thosc destroyed, and at tho
present rate Of tlininusion tho supply Of CAM
phos will orc long be tntrcls nshauatcd. Tho
htiA 'iscd ny tho Operatives IN this rnEnn are OF
very hln'plo pattern. mud ars bull M in h"ci; .
manner aa to bo oasiiv removed az tho
Cl'tneto advance into TIT, 1ntoriot. long
wooaen trough. coated Hit'! clay snd linlf-
iiiIo! with water. is placed 0ror eight nr
te1, fnrnhcnA OIL tho trough boards r'crcctt With
holos arc fitted, and nn these boards 1ro placed
inr-. containing tils osn,phor-woud chips, tho
whole being a,trnonntol by inverted eartaen-
ware poH. aud tho 3ollss fnado a!r-t!sis by I'LL"
ing thom up with hemp When tho furnaces hro
lit te steam nasHcs through tho pinrced boards.
and. satnrating tho chw. causcH tho suhlimasei
eamrlor to settle IN crystals on tie tnelte os the
rotA from which It 10 Fofnped nnh afterwards re-
sinatl. In summon tho camphor often lodaa An
much ~ 20 per cent OIL LIN way from tho proluc-
Ing districts to tho po:t OF hhlpuieHt.
DHYRDT ON LEMON PLANTATIONS.
MALAY called Ia Ftcacrssf, or dry.rot, LAS
attacked tho lo.non-ptant, and threatens great
losa OIL lolnon plantations. It Bolzcs tho OK
trem.slcB Of tho plant, sometincs the root. somo-
tines the branches, and, gradually spreading
over the wholo ttne, dlfns up tho sap as 1t COCA
along. All attempts to stay Tho rroGross OF tho
d1boasa hAvo beon nnasuiliug. Tho lemon In d
comparatively hardy ttoo, nnca mora easily ctal-
tivntcl than the orange. It las. therefore, boon
cnrclcssy treated. and louht|osB to this fact IN
owing tho prcueDt diuoaso 10 VOL as to tho
hahi. Of forcing 1t beyond its capacity. Tho
sroo is native Of tllo dry mud hot ao.i OF Persia,
but. transferred to various ciitna:cy 1t hal boon
maio to yioll t. !argeiy-increased harvest. 1t
is huggostod that by grating cuttings Of tho
icatthy leHou-plant on tile wild orause-troo 4
now STOCK OF sonnd and vigotuna plauts may 10
may bo avoided 1t ls said That aY1nptons OF
tho mn!ady arc Appearing in orange plantations.
SUMNER SCIENTIFIC COURSE.
i SUMMER COURSE Of instruction fn chemistry
And botany ts announced at Harvard Uni
veraty, Cambridge, for tho bcuoat OF
teachers and other adults. In tho depart
mout Of chemistry instruction will bo given
In general chemistry, qualitative analysis, qtlsp-
titatiTe analysis, and tleterminatlyc mlnssnlogy.
Tho extensive mud valuable collections md np-
paratuB Of tho UuiYer1itY will be opon to tho
st,,1ente aud tho course will oxtcud from July
8 10 Aug. -. Lessons in rhaenosamio botany
will bo given Ia tie botanical laboratory at
Cambridge, tho gresu-hcusca. .gaFdon, botanical
museum, and lihrnsY OF tho University offering
tlo pnpsls their ample !aciiilicA Tor study. K
course Of lecsurca on cryrogan1iu botany will
ulso DO given 1t sonlo locality oil tho scnshorc,
not yet determined. TNelyo lec.n1cs will be
devoted to tho nlgao, ard six to tho fungi.