THK PRINCIPLES OF BOTANY. 
717 
fidence in the judgment of the Editors of the Veterinarian, 
and will indeed be greatly disappointed as to their com¬ 
petency for tlieir office if tliey allow the publication of any 
writings from my pen which merit the designation of ela¬ 
borate and uninstrnctive articles.” I put forward no pre¬ 
tensions in the matter, but when I am criticised I always 
feel inclined to review my critic, more especially when I 
happen to know who he is. 
THE PRINCIPLES OP BOTANY. 
By Professor James Buckman, P.L.S., F.G.S., &c. &c. 
[Continued from p. 655.) 
We come now to an examination of the Algal Alliance, 
in its connection with the animal economy, and here it will 
he necessary to state that, although it has been long known 
that certain Fungi and others of the cellular class exert a 
powerful—nay often a poisonous—effect upon the animal 
system, yet the discoveries now making show further than 
this, that they are not only the cause of diseased action, 
but disease itself. If, then, we follow Professor Bindley, 
and divide the Algales into five orders, and then examine some 
of the genera and species, we shall have a better idea of the 
powers to which therapeutic effects are due on the one hand, 
and diseased structure on the other. 
Natural Order of Thallogens. 
Alliance 1.—Algales. 
Crystalline, angular, fragmentary bodies, brittle, and 7 1. Diatom-acem or 
multiplying by spontaneous separation . . . ) Brittle worts. 
Vesicular, filamentary or membranous bodies, multi¬ 
plied by zoospores generated in the interior at the 
expense of their green matter .... 
Cellular or tubular, unsymmetrical bodies, multiplied') 3. Fucaceee or 
by simple spores formed externally . . . ) Seaweeds. 
Cellular or tubular unsymmetrical bodies, multiplied ') 4. Ceramiacese or 
by tetraspores . . . . . . .) Rosetangles. 
Tubular, symmetrically branched bodies, multiplied ') 5. Characese or 
by spiral coated nucules filled with starch . . ) Charads. 
Now, amongst these, one of the simplest plants we meet 
with is the one to which yeast is due. The Torula cerevesice 
I 2. Confervacese 
V or Confervas. 
