| ” |End, 60 ft. from | ... | 2 | 20·47 | 1·06 | | |rise. | | | | | | | | | | | | | ” |(_c_)End, 840 ft. | ... | 2 | 20·08 | ·94 | | |from rise. | | | | | +-------------+---------------------+-------+-------+-------+--------+ (_a_) Air machine. (_b_) Unusual amount of dust. (_c_) Crystals were chiefly hexagons. ANGUS SMITH. The following table, showing the amount of ammonia present in rain collected at the different places named, is from Dr Smith’s work, ‘Air and Rain.’ COMPARATIVE. AMMONIA. That of Valentia (Ireland) taken as 1 or 100. Ireland, Valentia ·1 Scotland, sea-coast, country places, west 2·69 Scotland, inland, country places, west 2·96 Scotland, sea-coast, country places, average 4·10 Scotland, sea-coast, country places, east 5·51 England, inland, country places, east 5·94 England, sea-coast, country places, west 10·55 German specimens 10·61 London, 1869 19·17 Scotland, towns (Glasgow not included) 21·22 St. Helen’s 25·33 Runcorn 25·72 England, towns 28·67 Liverpool 29·89 Manchester, 1869 35·33 Manchester, 1869 and 1870, average 35·94 Manchester, 1870 36·54 Glasgow 50·55