406 Mr. Hocc's Observations on the Spongilla fluviatilis, 
I think they really present a stronger affinity with many of the Fungi, par- 
ticularly with the more permanent and porous kinds, several of the Boleti and 
Polypori, for instance ; I therefore propose to classify them as follows. 
Natural System. 
Class III. ACOTYLEDONES. 
Division I. TERRESTRES. 
Nat. Ord. Funai. 
Division II. Aquatica. 
Seu Hydrophyta et Thalassiophyta. 
Nat. Ord. Sroxarx. 
Spongiarum genera; ac Spongilla. 
Nat. Ord. ALR. 
Linnean System. 
Class XXIV. CRYPTOGAMIA. 
Ord. 4. ALG. 
Ord. 5. SroNcrx. 
Spongilla, et Spongiarum genera Marinarum. 
Ord. 6. Fuxar. 
Or, indeed, if it be thought upon the whole more advisable and more con- 
sistent with the nature of their structures that all the Sponges be included in 
the heterogeneous order Alge, they should then compose a distinct and sepa- 
rate family, Spongiaceæ, and be placed immediately next to the order Fungi. 
Notwithstanding that our knowledge respecting the nature of Sponges has 
during the last fifteen years received some advancement, I must express a 
hope to you that observers, whose leisure and Situation on the sea coast* afford 
is so great, 
ve element, 
» without their parenchymatous jelly and en- 
museums, can but little assi i ixi 
knowledge of their natural history. assist us in obtaining a correct 
