§2 
[ASSEMBI^T 
In this statement T reported that plates No. 1, 3, 6, 9, 72y 73 and 
77, were done in lithography by Geo. Endicott in 1844. Plates 2, 4, 
4a, 5fl, 7, 8, 10, 11, 12, 15, 16, 23, 24% 27, 29, 30, 31, 61, 62, 63, 
64, 79, 80, 81, 82, 83, 84, had been done in lithography by R. H. 
Pease, with the exception of 6a, 79, and 82 which were in hand but 
not completed. 
For the steel engraving, I had put into Mr. Pease's hands, plates 
53, 54 and 58, and two other plates with about forty figures were re- 
served for him. 
Messrs. Gavit & Duthie had in hand the plates numbered 5, 13, 14, 
al7, 17, 18, 19, 20, 21, 25, 26t, 28, 32, 33, 41, 42, 43, 44, 45, 46, 
47, 48, 49, 49a, 50, 51, 52, 55, 56, 57, 65, a66, 67, 67a, 68, 69, and 
70, making 37 plates. The entire number of plates finished and in 
hand for the 2d volume at that time was seventy-six. 
The foregoing list embraces all the plates of Crinoidea and Brach- 
iopoda, all the Cephalopoda, all the Trilobites, and all the Acephala 
and Gasteropoda, excepting one or two plates, leaving at that time 
nothing in my hands except the corals and about five or six other 
plates ; and my object was to give these out last, and all together, 
since it was in this class that I could expect to add new species. 
On comparing the preceding list with that of plates now unfinished, 
you will find plates 54, 58, 19, 20, 23, 55, 56, 57, 65, 67 and 68, 
among the number that were then in hand, nearly all of which had 
actually been given out during the year 1848. 
It is true the number of plates has been somewhat increased since 
my statement in 1849 , but these plates have been added between the 
numbers 33 and 40, and are among the corals. The plan of my vol- 
ume was entirely laid out in 1848, and the concluding plate litho- 
graphed previous to March 1849. I had determined about forty 
species of corals, leaving many of the obscure and difficult ones. 
Finding, however, in the autumn of 1849, when the printing of the 
1st volume had reached as far as the corals, that it would be finished 
long before the engraving could be completed, I commenced a revis- 
ion of the corals, which occupied me a considerable time. By this 
course the work is much more complete ; the number of species of 
this family is now doubled, and I believe much desirable information 
* 23 and 24 should have been 25 and 26. f 25 and 26, should have been 23 and 24» 
