xii PREFACE.” 
English plants;—Dr.. J.-E. Smurs,. who has ever 
shewn the utmost readiness to answer such en- 
guiries as the Author has been led to make, parti- 
cularly such as depended upon the inestimable 
Herbarium, so happily for science, in his possession; 
—John Sracxnovusz, Esq. who, with the ut- 
most liberalty, contributed by every means in his 
_ power to illustrate the’ Fuci and Conferve; ;+—the 
Rev. G. Swayne, ‘whose practical. knowledge 
of the Grasses enabled him to furnish many ob- 
servations of*high importance to agriculture ;— 
Sir Charles Tuunzerc, who, in the most’ hand- 
some manner, sent a collection of Swedish plants, 
which have not a little assisted in clearing up doubts 
respecting some species insufficiently discriminated 
by Linnzus ;—Thomas Woonwarp, Esq. the 
fruits of whose accurate and unceasing tesearches 
need not be particularly mentioned; they are con- 
spicuous in almost “an page of the work, 
It witihd be. easy to add the names of several 
other persons whose friendship and assistance would 
appear highly honourable to the Author, but some 
he is restrained from mentioning, and others will be 
found in the following List, and also affixed to 
their respective communications, 
