-----------------+-------------+------------+-----------+------+------ Parts per | August. | September. | October. | Nov. | Dec. 100,000. +------+------+-----+------+-----+-----+------+------ | 19th.| 31st.|15th.| 29th.|14th.|30th.| 15th.| 1st. -----------------+------+------+-----+------+-----|-----+------+------ Appearance, &c. | Cl. | Cl. | Cl. | Cl. | Cl. | Cl. | Cl. | Cl. Odour (heated to | None | None |None | None |None |None | None | None 100° Fahr.). | | | | | | | | Chlorine in |0·278 |0·313 |0·209|0·208 |0·272|0·243|0·312 |0·295 chlorides. | | | | | | | | Equivalent to |0·459 |0·517 |0·344|0·343 |0·458|0·400|0·515 |0·486 sodium | | | | | | | | chloride. | | | | | | | | Phosphates. | None | None | None| None |None |None | None | None Nitrites. | None | None | None| None |None |None | None | None Nitrogen in |0·0469|0·0486|0·037|0·0477|0·041|0·047|0·048 | .. nitrates and | | | | | | | | nitrites. | | | | | | | | Free ammonia. |0·003 |0·001 |0·004|0·002 |0 |0·003|0·001 |0·0032 Albuminoid |0·014 |0·009 |0·016|0·0094|0·013|0·015|0·014 | .. ammonia. | | | | | | | | “Hardness” | | | | | | | | equivalent | | | | | | | | to carbonate of | | | | | | | | lime-- | | | | | | | | Before boiling.|4·586 |4·332 |5·096|3·949 |4·520|4·512|3·840 |3·729 After boiling. |3·949 |4·332 |4·459|3·822 |4·294|4·512|3·390 |3·164 Organic and |3·00 |2·00 |2·50 |2·50 |2·50 |3·00 |3·00 | .. volatile | | | | | | | | (loss on | | | | | | | | ignition). | | | | | | | | Mineral matter |5·00 |4·50 |4·00 |4·00 |4·00 |4·50 |4·00 | .. (non volatile). | | | | | | | | Total solids (by |8·00 |6·50 |6·50 |6·50 |6·50 |7·50 |7·00 | .. evaporation). | | | | | | | | -----------------+------+------+-----+------+-----+-----+------+------ Cl. signifies _clear_. Sl. Tb., _slightly turbid_. Tb., _turbidity_ somewhat more marked. PARTS PER 100,000.