MAILBAG
A simple way to measure water evaporation
Sir ~ I refer to the reader ' s letter entitled How can I calculate the evaporation in the Dec / Jan edition. I worked at the Dept of Water Affairs & Forestry and the annual evaporation for the Gauteng area was 1 300mm
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Cullinan. We went to Cullinan Chemist, which was not yet open( outside their official trading hours). Despite the time, the chemist was opened and I was assisted without any delay or question— I was not even asked for any money upfront, and I could see that it was the prime mission of the chemist to stabilize me and prevent my body from going into shock. I am so grateful to the staff of to 1 500mm per annum, or about 3mm per day. Please note that it is dependent on various factors such as temperature, humidity, wind etc. To get the daily evaporation for your area, make a small dam1mx1mx0,3mdeepin
Cullinan Chemist – thank you; you made the medical profession proud. As for Wadrift Clinic – I have no words to describe how disgusting I find the staff actions there. You are a filthy disgrace to the medical profession. Maybe this whole situation was created because I am an elderly white person? Maybe this situation was caused by the fact that we have untrained, uncommitted, useless people a good sunny spot. Install a ruler or tape measure on the side. Take daily readings on the ruler at the same time each day, or weekly. When you fill it up again, take the lower reading and the add water and measure the new reading from which to
CLINIC manning our clinics? Is someone going to do something about this? I doubt it – Seemsthisistheway things are done at clinics! I do hope that this writing of mine could save someone one day in an emergency – DO NOT go to your local clinic for an emergency – they do NOT understand the word“ emergency”. Thanks to the staff at Cullinan Chemist I can write this letter! DJ Scholtz De Wagensdrift calculate your evaporation over the period of measurement. That ' s why one doesn ' t want to fill up the Vaal Dam completely. Due to its large surface area the water loss from evaporation is very great. Stephen By email
7 www. sasmallholder. co. za