THE NAUTILUS. 131 



Dr. Wm. H. Dall in the Proc. U. S. National Museum, 1905, 

 vol. 29, pages 415-432, gives a very interesting account of 

 Thomas Martyn and an exhaustive description of the first two 

 volumes, containing 80 plates, based on a copy in the U. S. 

 National Museum and a similar copy in the Academy of Nat- 

 ural Sciences, Philadelphia. In the publication, 1907, vol. 33, 

 pages 185-192, Dr. Dall gives some supplementary notes, based 

 on a copy in the library of Mr. John B. Henderson of Wash- 

 ington, also consisting of 80 plates, together with some notes 

 received from Mr. Charles Hedley referring to a four-volume 

 copy in the Australian Museum, Sidney. 



The size of the copy in the U. S. National Museum is 11 x 

 12 inches and the one in the Academy of Natural Sciences is 

 12| x lOf inches, while Mr. Henderson's copy is 16 J x 16^ 

 which is the size of the copy obtained by the Society. The 

 latter copy has in Vol. I, the first and second engraved title 

 pages both dated 1784, the engraved dedication to the King, 

 introduction preface and letter including 39 pages, two plates of 

 medals, and 'explanatory table of the 40 plates. Vol. II has 

 only the second title-pages same as in Vol. I, 1784, and ex- 

 planatory table of the 40 plates. Vol. Ill has only the first 

 title-page, same as in Vol. I, 1784, and explanatory table of 

 the 40 plates. Vol. IV has only the first title-page, same as in 

 Vol. I, 1784, and explanatory table of the 40 plates. Dr. Dall 

 says the first two volumes were issued in 1784, Volume III in 

 1786 and the work completed probably in the spring of 1787. 



In the Society's copy, in the explanatory table for Vol. IV, 

 figure 135 is (Cochlea) denrachates not dentrachates and figure 

 137 is (Cochlea) caelata not cretata as given in the explanatory 

 table of the copy in the Australian Museum. In the Henderson 

 copy Dr. Dall says plate 59 has two views side by side. In 

 the Society's copy only one view is given. All of the other 

 plates agree with that copy. 



In the NAUTILUS, vol. 22, p. 72, Mr. S. S. Berry refers to a 

 copy comprising four volumes in the library of the Leland Stan- 

 ford Junior University. This work lacks the explanatory table 

 for the plates of the fourth volume. This is apparently the 

 only other set of four volumes in America. In 1913 Mr. Berry 



