: 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 recom- 
mended 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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