THE BIRDS OF AUSTRALIA. 
Livr. 
received B.F, 
Livr. 
received B,F, 
75 
Jan. 5, 1828 
89 
Feb. 11, 1832 
76 
March 1 
90 
July 28, 1832 
77 
April 23 
91 
Dec. 29, 1832 
78 
July 5, 1828 
92 
July 26, 1834 
79 
Aug. 1, 1829 
93 
80 
Sept. 5 
94 
81 
Missing 
95 
82 
Jan. 2, 1830 
96 
83 (73) 
Feb. 20 
97 
84 (74) 
May 8 
98 
85 
Julv 3 
99 
86 
Sept. 4 
100 
87 
Jan. 22, 1831 
101 
88 
May 14, 1831 
102 & last June 29, 1839 
As further confirmation may be noted that in Froriep’s Notizen, No. 2, 
July, 1821, hefts 1-8, and 8 pis. are recorded: in No. 53, Oct. 1822 
hefts 9-23, pis. 49-138 are noticed, and in No. 102, Oct. 1823, that the 
38th heft was published. 
It wiU be seen from the above that a second edition of the early 
numbers was printed and delivered with the later livraisons. lliis 
accounts for some discrepancies in dates, which had better be here explained. 
Sherbom showed that the first twenty livraisons contained plates only, 
no text was issued, and that the text for these twenty was issued with 
the twenty-fiirst. The copy in the British Museum (Natural History) 
in the Tweeddale Library has at the bottom of the first page of each 
livraison a date written in ink. These dates generally coincide with 
those given by Sherbom, but the date of the month also commonly 
appears. In some cases these dates differ considerably, and we now 
have the cause. Thus, the plate 100 in the I7th livr. is dated May 1, 
1824, but plate 100 was included in the I7th livraison, which was issued 
in Dec. 1821, while the text was given with the 21st livraison, which 
appeared in April 1822. 
From the above table we see that livr. 17, text and plate, was acknow- 
ledged in the B.F., May 1, 1824, exactly the same date. As Froriep 
acknowledged the livraisons, it is obvious that here we have a second 
sending out of the earlier livraisons, and these appeared erratically as 
shown. The receipt of the livraisons from livraison 35 to 92 is very 
regular, only 42 and 81 being out of order, the latter altogether omitted. 
Curiously enough receipt of livraisons 93 to 101 do not appear, though the 
470 
