10 
forthcoming Manual of “ British Bryology,” if it had been published in 
time. He has given the synonyms of those species which have appeared 
in the former work under different names : and has arranged the mosses 
which the county has been ascertained to produce, on the same plan which 
has been pursued with reference to the Flowering Plants and Ferns. 
That is to say, he has given the names only where no further information 
of sufficient importance to be worth recording has been obtained respect- 
ing those species which are included in the original work, but the localities 
also of novelties and rarities. But the mosses of a considerable propor- 
tion of the cotmty have been only very imperfectly explored, and the long 
list of species which we are enabled to furnish, is the result, rather of the 
persevering efforts of a few talented and diligent bryologists in their re- 
spective districts, than of the combined labours of a great number of 
observers. 
On account of the comparative paucity of data which have been collected 
respecting the lower familes of cellular plants, we have not thought it 
desirable in the present work to exceed the scope of the original Flora. 
Respecting the Hepaticae of Yorkshire, information may be procured from 
the Botanist’s Guide, Spruce’s list in the Phytologist, (vol. 2, page 158,) 
and Mac Ivor’s Hepaticae Britannicae. Teesdale, Harriman, Brunton, 
Dalton, Hailstone, and Gibson, have determined numerous lichens in 
different parts of the county, and more recently, my friend W. Mudd, of 
Ayton, has published in the Phytologist, (vol. 5. page 71, 97,) a list of con- 
siderable extent of the species which he has found in Cleveland. Various 
botanists have collected maritime Algae, and some few have studied the 
fresh-water and microscopic groups ; but nothing like a complete list of 
the species which may be supposed likely to inhabit the country has been 
obtained. The Fungi of the country present a wide field for exertion, 
which has as yet hardly been entered upon. 
JOHN G. BAKER. 
Thiksk, 7th mo. 1, 1854. 
