Bibliographical Notices. 65 
Discovered by Isaac Carroll, Esq. (1854), on mosses in the 
Scottish mountains, Lochna-Cat. 
A species well distinguished by its small 3-septate spores. 
It is probably parasitic. 
22. Verrucaria endococcoidea, N yl. 
Thallus proprius nullus ; apothecia nigra, minuta, endococcoidea, 
perithecio parte immersa tenui fusca (latit. 0° 12—0°16 millim.), 
parte supera (extus visibili) convexula; spore 8"*, incolores, 
oblongo - ellipsoidee, 3-septatz, longit. 0:016—0:018, crass. 
0:006-0:007 millim.; paraphyses nullz. Gelatina hymenea 
iodo vinose rubens; spore dilute ceerulescentes. 
Discovered by Admiral Jones growing parasitically on the 
thallus of Lecidea excentrica, Ach., near the summit of Ben 
Lawers, Scotland. 
Apparently allied to V. dubiella, Nyl. From others it scarcely 
differs in the spores becoming blue with iodine, 
23. Verrucaria platypyrenia, Nyl. 
Late effusa ; apotheciis planis vel planiusculis (latit. 0°5 millim.), 
primo hypophleeodeis opacis; spor incolores (vel demum 
vetustate fuscescentes), oblouge, 3—5-septatz, longit. 0-023— 
0-030, crassit. 0-009-0:011 millim.; paraphyses molles, irre- 
gulares, vel non distinctee. 
On bark near Cork, Ireland. Discovered by Isaac Carroll, Esq. 
Probably only a variety of V. epidermidis, Ach. 
BIBLIOGRAPHICAL NOTICES. 
Manual of Geology. By The Rev. Samuri Havucuron, M.D., 
F.R.S., Fellow of Trinity College, Professor of Geology in the 
University of Dublin. London: Longman & Co., 1865.  8vo. 
pp- 360, with sixty-six woodcuts. 
Wuar is Geology? And what is a Manual of Geology? Some 
think that they have mastered the science when they know some- 
thing about the materials of the crust of the earth (Mineralogy and 
Lithology), about their order of position (Stratification), about the me- 
thods and agents of their arrangement (Geological Dynamics), about 
the fossils representing former animals and plants (Paleontology), 
about the various distribution of old seas and lands and the succes- 
sive faunze and floree (Theoretical Geology), and about the practical 
uses of geological knowledge. To get thus far they provide them- 
selves with as limited an acquaintance with chemistry, physics, and 
biology as is compatible with their task (or such only as they 
happen to pick up), and take for granted very much of both the 
Ann. & Mag. N. Hist. Ser. 3. Vol. xvit. 5 
