ADDENDA ET CORRIGENDA. 
P. 45, 45 *, page 1, line 3, for Derby ensis r, Derbiensis. — page 3, line 9> for inversed 
r. invested. — pages 4, 5, lines 4, 15, for Derbyensis r. Derbiensis. 
P. 46, 47, &c. page 4, line 6, after siilcatus insert a colon. — line 8, for magna r. magno. 
— page 2, line 2, for maxima r. maxinio. 
P. 51, 52, page 1, line 4, insert (costaticapsulis) after the generic name. 
The reader will observe that some few of the specific characters, at the head of 
the descriptions, vary from those given in the systematical arrangement at the end of 
the Vol. The latter are those which we consider as best adapted tor discrimination. 
In the Systematical Arrangement. 
At the back of the titlepage, for Introduction r. “ Outlines.” 
Page 2, line 2 from bott. for rotunda minuta r. rotundo minuto. — In the tollowmg line, 
for quinquepartita r. quinquepartilo, 
3, line 1, for maxima r. maximo. 
4, line 18, for rotunda r. rotundo. In the following line, for quinquepartita r. 
quinquepartito. 
5, line 13, for micaceus r. micaceous. 
6, line 12, for excavitis r. excavatis. 
7, line 1, del. n in nuncleus — line 6 from bott. for decussatem r. decussatim. 
9, line 6 from bott. for * d. d. * Perforati, valva &c. substitute * d. d. * Perforati, 
valva utraque convexa, cardine valvae plerumque majoris recto, patulo, secto 
inter nates foramine trigono, magno. 
10, line 19, for magna r. magno. — line 3 from bott. for maxima r. maximo. 
11, line 9, for Anomitee r. Anomite. 
19, line 13, for Petit r. Petty. Line 18, for coraliorum r. coralliorum. 
21, line 11, for Madreporetes r. Madreporites. — line 14, for Affined r. Allied. 
22, line 1, for Vegetabilia r. Vegetalia. — S ee “ Outlines.” — line l6, for 
pinna r. pinnae. . . . 
24. In some observations on Phyt. verrucosus. Woodward’s opinion respecting the 
nature of that fossil is stated, and a reference made to a specimen which he 
describes as exhibiting the appearance of a branch springing from the main stem, 
&c. Since those observations were written we have been obliged, by a particu- 
lar friend, the Rev. J. Gumming, Fellow of Trin.Coll. Cambridge, with a coin- 
municalion on the subject, which it may be proper to lay before our readers. 
This Gentleman, at our request, examined the specimen above alluded 
to, now in the Woodwardian Collection ; but, neither he nor Professor 
Hailstone, who most politely assisted in the examination, was able to 
detect the branching of the fossil, as seemingly described by Woodward. Hence, 
the opinion we have formed of the original of P. verrucosus receives no sup- 
port from that of Woodward — at least as far as that opinion depends on 
the sjiecimens of his collection. 
The Author here begs leave to express his regret that the letter-press of the present work, as 
well as a large part of that of his “Outlines,” had been printed off before Mr. Parkinson’s second 
Volume of Oganic Remains had made its appearance hence he has not had an opportunity of 
availing himself of some just views which that Gentlemam has there taken of the subject of extraneous 
fossils; and which at once prove him not only an acute reasoner, but also a most excellent practical 
naturalist. Vide his correct enumeration and descriptions of the various Pentaermitm and Entrochite 
hitherto discovered-the experiments by which he determined the existence of membranous matter in 
the animal petrifaction, &c. &c. 
