Plaie XXIX. 



Fi(j. 1. — A macroscopical view of L. ramosissiinum iu the polished surface of a block 



of the Limestone. 

 Fiij. 2 and 3. — Vertical sections of its branches x 80. 

 Fiij. 4. — Transverse section of the same x 80. 

 Fi(/. 5 a and h. — Tinho inckainienais Nisliiwada ; nat. size. 

 Fi(i. 6. — Casts of Sti/lnjdtora sp., greatly enlarged. 

 ]''i(j. 7'. — Milli'pora sp. Vertical section of part of a branch of the cœnostenra. 



