olic Series:_--

--------------------------------------------------------------------------
Acid. | Formula. | Melting | Found in
| | Point, |
| | deg.C. |
--------------------------------------------------------------------------
Elaeomargaric | C_{16}H_{29}COOH | ... | Chinese-wood oil.
--------------------------------------------------------------------------
Elaeostearic | C_{16}H_{29}COOH | 71 | Chinese-wood oil.
--------------------------------------------------------------------------
Linolic | C_{17}H_{31}COOH | Fluid | Linseed, cotton-seed and
| | | maize oils.
--------------------------------------------------------------------------
Tariric | C_{17}H_{31}COOH | 50.5 | Tariri-seed oil.
--------------------------------------------------------------------------
Telfairic | C_{17}H_{31}COOH | Fluid | Telfairia oil.
--------------------------------------------------------------------------

These acids readily combine with bromine, iodine, or oxygen. They are
unaffected by nitrous acid, and their lead salts are soluble in ether.

IV. _Linolenic Series:_--

--------------------------------------------------------------------
Acid. | Formula. | Found in
--------------------------------------------------------------------
Linolenic | C_{17}H_{29}COOH | Linseed oil.
--------------------------------------------------------------------
Isolinolenic | C_{17}H_{29}COOH | Linseed oil.
--------------------------------------------------------------------
Jecoric | C_{17}H_{29}COOH | Cod-liver and marine animal oils.
--------------------------------------------------------------------

These acids are similar in properties to those of Class III., but
combine with six atoms of bromine or iodine, whereas the latter combine
with only four atoms.

V. _Ricinoleic Series:_--

-----------------------------------------------------------
| | | | |
| Acid. | Formula. | Melting | Found in |
| | | Point, | |
| | | deg.C. | |
|------------|----------------------|---------|-------------|
| | | | |
| Ricinoleic | C_{17