ANIMAL RESOURCES AND FISHERIES 01- TTNITLU STATES. 231 



Derived from li!*ilie!!i. 



(lutestiues of gia\ling-, used by Laplanders as a substitute for 



rennet.) 

 Skins of eels, used by negroes for rlieuniatisni. 



Derived Troiii inseetiii. 



Vesicatory ]>re])arati()iis from Aiuerieau beetles, Cantharis cinerea 



and C. vitiata. 

 Vesicatory i)reparations derived from foreign beetles, cantliarides 



or Spanish Hies {Canthnris vesicatoria), and other species, and 



substitutes, Mylabris cichorii, Cercoma t^chcefferij Mcloe, sp., 



var., «S:c. 

 Vesicatory preparations from American spiders, such as Te(jenaria 



medicinaJis. 

 Gall-nuts, used in medicine (see under 29). 



Derived f roBJi crji^laeea. 



Salve-bug of fishermen of \j-M\\i^ [Ccdigus c«r/«s), parasite on cod- 

 fish. 



Crabs' eyes, or concretions fr-om stoniach of astacus, used as an 

 antacid. 



Derived Troiii ^voraiBxi. 



American leech {MacrobcleUa decora), used in surgery. 

 (European leech {Hinido medicinalis), introduced into Americ;>.) 

 (African leech [Hiriuio trochina), introduced.) 

 Leeches used as barometers. 



Derived Iroiii iBioiEii!*ik>>i. 



(Cuttle-fish bone of Sepia officinalis.) (See under D, III, H.) 

 Calcined shells, used for building-lime and in manufacture of denti- 

 frices and enanu'l. (See under D, III, H.) 



Derived Iroiiii rndiate!^. 



a. Limes, derived from calcining coral and coral rock. 



Derived li'osii |>rotozoan!>i. 



Burnt sponge, formerly used in medicine. 



Infusorial earth and its applications. (See above under K.) 



31. Fertilizers. 

 ]\atiiral s^iiano!^. 



Bat guano from caves. 



Bird g-uano from oceanic islands. 



