NOTE.--The numbers in this Table are mostly derived only from a single analysis and have no value as determining the average composition of these Guanos, but they serve to give a general idea of their value. -------------------+--------+---------+---------+-----------+------------+ | Sea | Indian. | Holme's | Ascension | Possession | | Bear | | Bird | Island. | Island. | | Bay. | | Island. | | | -------------------+--------+---------+---------+-----------+------------+ Water | 30.82 | 23.62 | 25.00 | 15.97 | 10.92 | Organic matter }| | | | | | and ammoniacal }| 31.78 | 60.05 | 32.10 | 23.15 | 15.42 | salts }| | | | | | Phosphates | 24.33 | 7.18 | 27.36 | 32.54 | 46.41 | Sulphate of lime | 3.84 | ... | ... | ... | 7.46 | Carbonate of lime | 0.58 | 2.79 | ... | ... | ... | Alkaline salts | 7.38 | 5.58 | 8.82 | 15.92 | 6.15 | Sand | 1.27 | 0.78 | 6.72 | 12.42 | 13.64 | +--------+---------+---------+-----------+------------+ |100.00 | 100.00 | 100.00 | 100.00 | 100.00 | | | | | | | Ammonia | 10.45 | 10.27 | 7.75 | 6.06 | 1.34 | Phosphoric }| | | | | | acid in alkaline}| ... | ... | ... | 1.82 | ... | salts }| | | | | | -------------------+--------+---------+---------+-----------+------------+