and to whose kindness they owe so many valuable observations on those intricate tribes of the vegetable kingdom; nor should the name of Dr Swartz of Stockholm be omitted, who, by his valuable presents of Swedish mosses, has enabled them to quote his Muscologia Suecica with confidence; it may also here be proper to mention, that having become possessed of the Herbarium of the late Mr Wm Weighell of Sunderland, on whose authority they have inserted several species, they can add their own testimony to his accuracy in those instances.
They have now only to say, that should this result of numerous excursions, often attended with great fatigue, though never with subsequent satiety or disgust, contribute to the entertainment of those who set a value on botanical information, or assist them in their favourite pursuit, the purpose of this publication will be completely answered.
☞The materials for the second volume of this work, in which the Lichens will be arran--
