44. REVIEWS. 
for myself, viz. having once selected a work for reference, to quote 
it throughout; this did not seem advisable in the case of the 
above-mentioned works, on account of their contaming so many 
ilustrations that could well be dispensed with.” See preface, p. il. 
The number of references to figures is, as intimated in the title, 
86,000. 
The number of species, estimated by taking 7 columns at ran- 
dom, and multiplying the average number of species in these by 
the number of columns (1184), is between 45,000 and 50,000. 
The average number of references to each species would be nearly 
two. But the great majority of the species has only one re- 
ference, some two. Saponaria officinalis has 18; Pinus sylves- 
tris, 21; Plantago major, 16; P. media, 9; P. lanceolata, 10; 
P. arenaria, 7; Hippophae rhamnoides, 15; Hippuris vulgaris, 
16; Drosera rotundifolia, 13; Dryas octopetala, 12 ; Botrychium 
Lunaria, 11; Carex arenaria, 12; C. acuta, 8; C. atrata, 7; C. 
axillaris, 6; C. levigata, 4. 
The number of species set under Hypericum is 131, and the 
number of citations is 219. We subjoin the following as a spe- 
cimen of a work which will save literary botanists a great deal of 
unpleasant labour :— 
Woodsia alpina, New. Newman, p. 143, 147. 
elongata, Hook. Hooker, Sp. Fil. 21. 
glabella, R. Br. Hook. Bor. Am. 237. 
guatemalensis, Hook. Hook. Sp. Fil. 21. 
hyperboreea, R. Br. Linn. Trans. xi: 11. 
Hook. Gen. Fil. 119. 
Kunze, Analecta, 27. 
Newman, p. 143, 147. 
Sowerby, Ferns, 6. 
ilvensis, &. Br. Engl. Bot. 2616. 
Newman, p. 136, 137. 
Sowerby, Ferns, 5. 
var. y, Bab. Newman, p. 143, 147. 
incisa, Gzll. Hook. Ic. Fil. 2, 191. 
Perriniana, H. et Gr. Hook. Ie. Fil. 1, 68. 
peruviana, Hook. Hook. Sp. Fil. 21. 
pubescens, Spr. Acta Leop. x. 1, 16. 
Xylomelum occidentale, A. Lr. Hook. Ic. Plant. v. 446. 
pyriforme, R. Br. Rehb. Hort. 90. 
Endl. Iconogr, 47, 48. 

