|
|
|
 |
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|
| 5th
June 1999 - 2nd July 1999 |
|
| 5th
June: |
| �
Tadpoles were put in the containers with solutions or pondwater
(5 per container) |
| �
Measured the lengths of tadpoles |
| �
Deaths: |
| -
pondwater cum ammonium hydroxide solution (pH 10.0) -- 5 deaths |
|
| 6th
June: NIL |
|
| 7th
June: |
| �
Changed pondwater/solutions |
| �
Deaths: |
| -
pondwater (pH 7.0) -- 1 death |
| -
pondwater cum hydrochloric acid solution (pH 4.0) -- 1 death |
| -
pondwater cum hydrochloric acid solution (pH 5.5) -- 3 deaths |
| -
pondwater cum nitric acid solution (pH 4.0) -- 1 death |
| -
pondwater cum sulphuric acid solution (pH 4.0) -- 2 deaths |
| -
pondwater cum calcium hydroxide solution (pH 8.5) -- 2 deaths |
|
| 8th
June: |
| �
Deaths: |
| -
pondwater cum sodium hydroxide solution (pH 10.0) -- 1 death |
|
| 9th
June: |
| �
Deaths: |
| -
pondwater cum nitric acid solution (pH 5.5) -- 1 deaths |
|
| 10th
June: |
| �
Changed pondwater/solutions |
| �
Deaths: |
| -
pondwater cum sodium hydroxide solution (pH 8.5) -- 1 death |
|
| 11th
June: NIL |
|
| 12th
June: NIL |
|
| 13th
June: |
| �
Changed pondwater/solutions |
| �
Deaths: |
| -
pondwater cum sulphuric acid solution (pH 5.5) -- 2 deaths |
| -
pondwater cum sodium hydroxide solution (pH 10.0) -- 1 death |
|
| 14th
June: NIL |
|
| 15th
June: |
| �
Deaths: |
| -
pondwater cum sulphuric acid solution (pH 5.5) -- 3 deaths |
| -
pondwater cum nitric acid solution (pH 5.5) -- 1 death |
| -
pondwater (pH 7.0) -- 1 death |
| -
pondwater cum ammonium hydroxide solution (pH 8.5) -- 1 death |
| -
pondwater cum calcium hydroxide solution (pH 8.5) -- 2 deaths |
| -
pondwater cum sodium hydroxide solution (pH 8.5) -- 1 death |
|
| 16th
June: |
| �
Changed pondwater/solutions |
| �
Deaths: |
| -
pondwater cum nitric acid solution (pH 4.0) -- 1 death |
| -
pondwater cum sodium hydroxide solution (pH 8.5) -- 1 death |
| -
pondwater cum sodium hydroxide solution (pH 10.0) -- 1 death |
|
| 17th
June: NIL |
|
| 18th
June: |
| �
Deaths: |
| -
pondwater cum calcium hydroxide solution (pH 10.0) -- 1 death |
|
| 19th
June: |
| �
Changed pondwater/solutions |
| �
Deaths: |
| -
pondwater cum sodium hydroxide solution (pH 8.5) -- 2 deaths |
| -
pondwater cum calcium hydroxide solution (pH 10.0) -- 2 deaths |
| -
pondwater cum ammonium hydroxide solution (pH 8.5) -- 1 death |
|
| 20th
June: NIL |
|
| 21st
June: |
| �
Deaths: |
| -
pondwater cum sodium hydroxide solution (pH 10.0) -- 1 death |
|
| 22nd
June: |
| �
Changed pondwater/solutions |
|
| 23rd
June: |
| �
Deaths: |
| -
pondwater cum hydrochloric acid solution (pH 4.0) -- 2 deaths |
|
| 24th
June: |
| �
Deaths: |
| -
pondwater cum ammonium hydroxide solution (pH 8.5) -- 2 deaths |
|
| 25th
June: |
| �
Changed pondwater/solutions |
|
| 26th
June: NIL |
|
| 27th
June: NIL |
|
| 28th
June: |
| �
Changed pondwater/solutions |
| �
Deaths: |
| -
pondwater cum nitric acid solution (pH 5.5) -- 1 death |
|
| 29th
June: NIL |
|
| 30th
June: NIL |
|
| 1st
July: |
| �
Changed pondwater/solutions |
|
| 2nd
July: |
| �
Measured the lengths of tadpoles |
| �
End of experiment |
|
|
