138 Marshall Ward . — On the Characters , 
In the second place, it records and classifies a number of 
facts of great value to the systematist and to the physiologist. 
True, it leaves him the trouble of putting the facts into his 
schemes, but I see no valid objection to that, as it is naturally 
part of his work. 
The only objection to such schemes as the one just criticised 
seems to be that they obviously lead to the creation of 
‘ multiple species ’ ; because, since the pathologist tabulates 
one set of forms, the water-analyst another, the sewage- 
examiner another, the agricultural expert another, and so on, 
we have the difficulty of unravelling these various records. 
Unfortunately this last criticism is at present the more 
cogent because no one scheme has as yet been decided upon, 
and every book on the subject propounds a different scheme. 
I will simply illustrate the last remark by the following 
table taken, in outline, from Woodhead’s recent little book, 
Bacteria and their Products, since it shows the application of a 
similar scheme to pathological forms — not entirely, but chiefly. 
I only select a few of the species to illustrate each group. 
TABLE IX. — Woodhead, 1891. 
1. The organism is a Micrococcus. 
I. Grows on gelatine, but does not liquefy it. 
A. The colonies are white. 
(a) Colonies small, not confluent, slow-growing. 
Streptococcus pyogenes. 
S. erysipelatosus. 
S. pyogenes malignus , &c., &c. 
(/ 3 ) Colonies confluent, and grow luxuriantly. 
(i) Cocci arranged irregularly. 
Micrococcus candicans. 
M. ureae . 
Staphylococcus cereus albus. 
(ii) Cocci arranged like a dumb-bell — diplococci. 
Diplococcus lacteus faviformis . 
D. albicans amplus , &c. 
(iii) Cocci arranged as Sarcinae. 
Micrococcus tetragenus. 
