RESEARCHES CONNECTED WITH GEOLOGY. 
143 
261. Aracese or Aroidese. 
263. Acoracese. 
263. Typhacese. 
264. Fluviales. 
265. Juncaginacese. 
266. Pistiacese. 
267. Graminacese. 
268. Cypei'aceae. 
269. Desvauxiacese. 
270. Restiacese. 
Sub-order Eriocaulonese. 
271. Xyridacese. 
Class IV. RniZANTHEiE. 
272. Rafflesiacese. 
273. Cytinacese. 
274. Balanophoracese. 
275. Cynomoriaceae. 
Class V. AcROGENiE ; or Aco- 
TYLEDONES. 
276. Polypodiacese. 
277. Gleicheniacese. 
278. Osmundaceae. 
279. Danseacese. 
280. Ophioglossaceae. 
281. Lycopodiaceee. 
282. Marsileaccce. 
283. Salviniacese. 
284. Musci, or Bryaceee. 
286. Jungermanniacese. 
287. Hepaticee or Mar- 
chantiacese. 
288. Characese. 
289. Fungi. 
290. Lichenes. 
291. Algse or Algaceae. 
4. After the enumeration of tlie species distributed over 
the various formations individually and the collective 
number of each natural order the following summaries 
should be added. 
Table I. — Collective Estimate. 
Nat. Orders. Genera. Species. 
Exogense, containing including — including • 
Gymnospermse — «^ 
Endogense 
Ehizanthese — 
Acrogense — 
Total Total Total 
