102 DR LAUDER LINDSAY ON THE SPERMOGONES AND PYCNIDES 
teresting Yorkshire lichens; and to Dr Barctay Montcomery, of Penzance, 
Cornwall, for specimens from the extreme south of England. I have also care- 
fully examined all the specimens (260 in number) contained in the first eight 
fasciculi of the Rev. W. A. Leicuton’s Lichenes Britannici exsiccati. In addi- 
tion to which, the Hookerian Herbarium—in studying whose valuable con- 
tents I spent a month during last summer—contains a large series of English 
specimens, collected by Borrer, TuRNER, LeatTHes, Hooker, and others. In 
regard to Jrish species I have had an opportunity of examining the greater part 
of the lichens described by TayLor in Mackxay’s Flora Hibernica, as they are con- 
tained in the Herbaria of Dr Mackay of Dublin, Mr Davip Moors of Glasnevin, 
Dublin, and Mr Isaac Carrout of Cork. For a loan of the herbarium of lichens 
first named (TayLor’s) I am indebted to the kindness of Professor HARVEY of 
Dublin, who also procured for me a loan of the collection of lichens made by Mr 
Davip Moore, while attached to the Geological Survey of Ireland. They are 
chiefly from Antrim and other northern counties of Ireland, and now belong to 
the Museum of Irish Industry, Dublin. Mr Carro.z of Cork has repeatedly sent 
me large collections of lichens made by himself in the south of Ireland ; and Pro- 
fessor Dickir of Belfast has sent me specimens from the north of Ireland. All 
the Irish collections sent to me have been most interesting, as containing both 
new forms and new species not hitherto described, or erroneously described and 
classified. 
Inregard to foreign specimens, my obligations are chiefly due to the Hookerian 
Herbarium at Kew, which in some respects contains the finest collection of 
lichens in the world; while in other respects it is second only to that of the 
Jardin des Plantes, Paris. In that herbarium I availed myself of the opportunity 
of examining specimens from all parts of the world—from the arctic regions, 
collected by Ross, Brecuer, Parry, Lyatu; from the antarctic regions, collected 
by Dr Hooxer ; from the arctic parts of North America, collected by RicHaRpson, 
Scounar, and Menzirs; from the United States, by Tuckerman, Lea, and others ; 
from Mexico, by LinpEN and Gateort1; from Peru, by HumBoupr; from Brazil, 
by GARDNER; from India, by Drs Hooker and Tuomas Tuomson, and Messrs 
StrRAcHEY and WINTERBoTTOM ; from China, by Fortune; from the Philippine 
Islands, by Cumine ; from Java, by Micue.; from Australia and Tasmania, by 
Dr Hooker, Gunn, and others; from New Zealand, by CoLenso; from every 
part of the world, indeed, to which botanical travellers have penetrated. In the 
summer of 1857 I went to Norway, for the purpose of studying 7m sztw alpine 
lichens, spending several weeks amid the wilds of Sneehitten and the other alps 
of the Dovrefjeld range of mountains. I have carefully studied all the specimens 
(650 in number) contained in the twenty-six fasciculi of ScumreEr’s Lichenes 
Helvetict exsiccati, and also 478 specimens in the first eight fasciculi of Hepp’s 
Die Flechten Europas, which is a continuation of Sco#ReEr’s work just men- 
