76 A DISEASE GARDEN 
Their place in the vegetable world is indicated by the 
following scheme :— 
Thallophyta (lower plants without fibro-vascular bundles, 
and with no distinction between root and stem). 
Forms with Chlorophyll Forms without Chlorophyll. | 
(Algae. Desmids, etc.) | 
Multicellular. Spores in Unicellular. Spores  fre- 
differentiated cells or spore- quently absent. Spore- 
bearing organs. Frequently bearing not or but slightly 
a sexual method of repro- differentiated. No form of 
duction. sexual reproduction. 
| 
The Hyphomycctes, or 
Fungi and Moulds. 
| | 
Reproduction by fission. Reproduction by budding. 
The Schizomycetes, or Bacteria. The Blastomycetes, or Yeasts. 
Bacterial classification is incomplete and unsatisfactory. 
Each author has formulated or favoured some scheme of his 
own, but none has been generally adopted. Our knowledge 
is still limited, and many factors have to be considered ; 
the lines, upon which attempts to classify have been made, 
are shown in following table from Gould and Pile’s Dic- 
tionary. 
GLASSIFICATION. 
1. Microbacteria— 
short rods. ig 
2. Desmobacteria— kis 
1.—According to morphology, . oh nee 
3. Spherobacteria— 
globules. 
4. Spirobacteria— 
\ spirals, 
3 . Saprophytic. 
2.—According to biology, . 1 Ryde se 
] 
2 
4 1. Aerobic. 
3.—According to necssary medium, pause 
