THE TRIBUNE.

American Agricultural Association.
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American Agricultural Association.


Al a meeting Of the Association, Monday, May
the 9th. the following resolution, offered by DR..
Gsrdner, was unanimously adopted:


Rc,o.ced That this Association Offer liberal premium
fr Investigations the and origin Of
the disease Of the Poao 10 be made under the conditions
imposed ~ the Executive Committee.


The Executive Committee, therefore, offer under
the preceding resolution, premium of $50 for the
bes; investigations made during the ensuing season
in accordance with the plan drawn up by the Chem
ist Of the Association, and appended. They also
impose the following conditons The competitors
TO be or 10 become members Of the Association :;
the papers and specimens 10 be forwarded free OF
expense TO the Executive Committee through their
Secretary, Dr. Gardner, 4l2 Fourth-sireet, n. York.
on or before the lst Of November; communications
whether successful or otherwise, to become the
property OF the ASSOCIATION; all persons IN the
URiied States may become competitors The pre-
MUM will be declared al the General Meeting in
January next. The papers sent 10 bear motto
without the name address OF the author, these
particulars being contained in sealed letter super
scribed with the same motto, Investigations ter
mfnating without the appearance oi disease IN the
PStatoe. but pursued IN accordance with the ensu-
ing conditions, will be received IN competition


The following conditions 10 be observed by COM
petitions for the premium OF the Association are re-
spectully submitted by order OF The Executive Com
niuee. d. Z. GARDNER.


May Sth. l64S.


lst The papers TO be entirely original, and in No
part transcripts from other works, 10 contain u
record OF The observations made during the growth
oi the plants and conducted on at least $50 speci-
mems


3D. The variety and character of the seed poia-
toes the mode and time Of planting, The nature Of
the soil. its condition OF drainage, the manures
used and previous ,illage. TO be fully detailed.


Sd. daily register TO be kept from the lime OF
sowing securing the crop, containing the tempe
rature Ia the sun and shade and the dew point in
the shade at II O'clock with the state OF the sky,
the occurrence OF ralns dews or other meteorolo-
sical conditions. The manner OF taking the dew
point 10 be stated u


4th. Five entire plants 10 be taken up during
each week after the third week from planting, and
record made of the condition OF the leaves, stems
and tnbers the last being cut open and carefully
inspected with a simple microscope and all unna-
tural appearances written down with the day of
the observation. Diseased portions be preserved
by drying and forwarded TO the Association.


9Th. ALI insects discovered on the green PORTIONS
roots. &c. to be examined and al least IL specl-
mems OF each species IN the perfect Qmago) state
10 be preserved and forwarded 10 the Association
When practicable. the caterpillar to be described
or figured, and the habits of the insect recorded
This condition 10 be performed in the case OF all
insects whatsoever found preying on the herbage
or roots.


9th. At least IL specimens Of iubers in every
stage Of disease with similar nuNber In sound
condition Of the same variety TO be forwarded =
The leaves and upper parts OF any plants presenting
remarkable appearance, 10 be carefully dried be-
tween sheets OF unsized paper and at least IL spe
cimens sent, with all other objects in the same box
or parcel as the written communication.


the observer be not provided with instrument for
tanning the dew point. the following simple method
DO adopted Lot little fresh spring be placed
In dry wine glass and Introduce thermometer, s,ir 1t
freely In the ui and ascertain the temperature the
tho dew the exterior OF the glass disappear
nR spring cool enough deposit
Of dew. add few drops OF iced until dew
The dew point the temperature tho dew first
appears yanshes but the latter 1, the best time for
Rrnlns d. z. G..