114 The Philippine Journal of Science i9it 
nately I have been able to examine a complete unbound copy of 
the work, in the original fascicle-covers, the property of D. Juan 
Javier, of Manila, and have been able definitely to determine the 
years in which the different fascicles were issued, according to 
the dates printed on the backs of the fascicle covers. 
From the prospectus issued in 1877 it is learned that the plan 
of publication was to issue at least two and not to exceed three 
fascicles each month, each fascicle to consist of 16 pages of text 
with 6 plates. Two editions were advertised, the edition de 
luxe, printed on a special quality of paper accompanied by col- 
ored plates, and a cheaper edition, on poorer quality of paper, 
and with uncolored plates. The price per fascicle for the edition 
de luxe in the Philippines was fixed at $2.25, outside the Phil- 
ippines $2.50, and for the cheaper edition $1.25, and $1.75 res- 
pectively; the prices were local currency (Mexican silver). 
The edition de luxe was to be limited to 500 copies, which 
were to be numbered and each was to be inscribed with the 
name of the subscriber. The latter part of this plan, at least, 
does not seem to have been adhered to, as I have seen no num- 
bered copies of this work among about 15 examples examined. 
Volume I consists of 24 fascicles, none of which are dated. 
The date given on the title page of the volume is 1877, which is 
doubtless correct, as the prospectus was issued the same year, 
while Volume II appeared, in part, the following year. 
Volume II consists of 27 fascicles, but of these 9 are double, 
that is, 2 fascicles are contained in a single cover; these double 
fascicles were 3-4, 6-7, 9-10, 12-13, 15-16, 18-19, 21-22, 24-25, 
and 26-27. Fascicles 1 to 19, consisting of pages 1 to 304, are 
dated on the fourth page of the covers 1878, the date given on 
the title page of the volume; fascicles 20 to 28, consisting of 
pages 305 to 419, and index, are dated 1879. 
Volume III consists of 1 7 fascicles, of which 4 are double like 
those of Volume II; the double ones are 2-3, 5-6, 8-9, and 14-15. 
All the fascicles of this volume are dated 1879, the date given 
on the title page of the volume. 
Volume IV consists of 24 fascicles, numbered from lA to 23 A, 
the last being unnumbered and indicated as “entrega ultima.” 
Two of these are double, 4-5, and 9-10. Fascicles lA to 12A 
are all dated 1880, and contain the articles by Llanos and Mer- 
cado, up to and including page 58 of Mercado’s paper ; fascicles 
13A to the end comprise the “Novissima Appendix;” No. 13A 
contains also the last page of Mercado’s paper and the index to 
the same. The dates of publication of these parts are of con- 
