La occa Iprcacu- 
"I “y 
- One of the ts chng gern. pecacuanha. These are so nu- 
‘merous, ane spe notice each plant 
: uy aie —*. Pes le 
, o arene Coll. Nos. 158 and 159. 
A green wax is produced by the Myrica Cerifera, or wax- 
bearing myrtle, which eeniteh. spec. No. 60, : 
No, 159.—Canaste: : formerly confounded with gum. 
With acid, 
“Se ant ds scietig ee Trapani ay 
— Orricrnat. Thapannth 
Variety 2. Cherry Gum, from the cherry tree, and others of 
the Pruni. Only partially soluble in water. Treated with 
nitri¢ acid, yields malic and oxalic acids. 
Cabinet specimen, Jeff. Coll. No. 161. 
ar. 2. Congo Gum. Cabinet specimen, Jeff. Coll. No. 162. 
Var. y. Dominica Gum. 1 large masses like stalactites, 
brittle, light yellowish brown, translucent; contains three 
: cerasin, one part gum. 
Cabinet specimen, Jeff. Coll. No. 163. 
No. 160.—Crrara. Cerates of the different Colleges. 
Pharmaceutical compositions, characterized by a degree of 
_ consistence intermediate between that of plasters and that 
of ointments, 
1. Ceratum calamina—is Turner’s Cerate, being medicated 
by the lapis calaminaris, or impure carbonate of zinc. 
i 2. Ceratum cetacei—is medicated by spermaccti. 
> 3. Ceratum cantharidis, called also Ceratum lytia#—medicat- 
j ed by Spanish or paint gg 
— & Ceratum plumbi » called also Unguentum Ce- 
_- russee—medicate ie cooling substance designated 
in the name. 
— Ceratum on haneegeirg ements 8 Goulard's Cerate 
a 
