: ENCLOSURE TO PART III.
Subsequently a paper on the meteorological instruments required
for Cotton Stations was submitted by Messrs. Nye and Ducker: this
was discussed by the section, and the following was approved.
: Meteorological Instruments for Cotton Stations.
The list given below refers to instruments considered essential
for Stations under direct European control. A few instruments are
mentioned as useful but not essential, and their acquisition will be a
matter whether or no, funds are avaliable, and whether the Staff of
the Station 1s strong enough to use them.
Soil Moisture, though not strict.y speaking a meteorological
consideration, is closely bound up with such phenomena as Ramtall
and Temperature, and Is considered w= suitable subject for inclusion
under the above heading: —
The following instruments are Attention is called to the following
considered necessary. instruments, which may be iound
necessary in certain circumstances.
Rain Gauge. Automatic Raingauge.
Hygrograph* Anemometer (Anemograph).
Thermograph®
Wet and Dry Bulb Thermometers Barometer (Barograph).
Evaporimeter.
Maximum and Minimum Minimum Thermometer for deter-Thermometers.
 mining terrestrial radiation.
Soil Thermometers. Auger, Dishes, Drying Bath, and
Balance for determination of
soil moisture.
Stevenson Thermometer Screen. Black & White Bulb thermometers.
Sunshine Recorder (Campbell-Stokes
 or Jordans).
* These two may be combined as a Thermo-Hydrograph.
It is considered important that all instruments be of the best
quality and be obtained from a reliable and well-known firm of makers.
All thermometers should be tested and all records shouid be kept in
a standardised form.
As far as British Possessions are concerned it is suggested that
records be kept as follows: —
Rainfall... a ne ... recorded in inches and decimals.
Humidity and Soil Moisture ... recorded in percentages.
Evaporation ALA pr . recorded as quantity per unit area
per diem.
Temperatures ... oh recorded in degrees Fahrenheit.
Sunshine ... 22 2 recorded in hours and minutes per
diem.
As a manual for guidance in the use of the instruments recommended
 it is suggested that all observers should make use of the
Royal Meteorological Society’s publication entitled *° Hints to
Meteorological Observers.’
~~ Mr. NYE with regard to growth records, said he would like to
know the method adopted in other places; in Uganda, if the plant
was measured from the ground, difficulties invariably arose from wash
after heavy rain.

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