FISHERY RESOURCES OF THE PHILIPPINE ISLANDS. 309 



Aghardhiella sp. (Fuous gulaman Blanco). This species is common in 

 Manila Bay and is universally known to the Tagalogs as gulaman. It is probably 

 the most generally used species in Manila, and during certain seasons is almost 

 always to be found in the native markets. 



Chaetomorpha crassa (Ag.) Kutz. Known in Union Province as caMdf-oaMat, 

 and locally used for food. 



Codium tenue Kiltz. Known in Union Province as pupu-lo; edible. 



Enteromorpha intestinalis L. This green alga is abundant in brackish 

 water about the mouths of streams, and is eaten by the natives to some extent. 



Eucheuma spinosum (L.) J. Ag. Known in Union Province as rupruppuuc ; 

 edible. 



Gracillaria confervoides (L.) Grev. Abundant in Manila Bay at certain 

 seasons, locally known as gulaman, and sold in the native markets of Manila. 



Gracillaria crassa Harv. Used for food in Union Province; known to the 

 Ilocanos as susueldot-iayhay . 



Gracillaria eucheumoides Harv. Known in Union Province as canot-cano't ; 

 edible. 



Gracillaria lichenoides (L.) Grev. Known in Union Province as guraman; 

 edible. The above four species are allied to a Japanese species largely used in 

 the manufacture of agar-agar.'° 



Halymenia formosa Harv. Known in Union Province as garnet; there used 

 for food. An allied species found in Manila Bay, native name unknown, is 

 doubtless also edible. 



Liagora cheyneana Harv. Knovra in Union Province as haris-liwris; edible. 



Sargassum siliquosum J. Ag. Known in Union Province as aragan, there 

 used for food. Widely distributed in the Philippines, as are several other 

 species of the genus, all of which are doubtless utilized to a greater or less 

 extent as food. 



VIII. THE PREPARATION OF ISINGLASS IN TPIE PHILIPPINES. 



The preparation of isinglass is an industry that could be carried on 

 easily in the Philippines, but so far as I have been able to ascertain, it 

 has never been inaugurated. 



Isinglass is the purest form of commercial gelatin known; it is pre- 

 pared from the "sounds" or air-bladders of certain fishes. 



The preparation is very simple and requires no outlay of capital. The 

 exact method of procedure is as follows: 



Remove the air bladders (also called "maw", "swim bladder") from the 

 fishes soon after they are caught, slit them open and wash thoroughly, take 

 off any thin membranes which envelop them. Then expose to the air to stiflfen. 

 If oily, wash in lime water, then in fresh water and dry. They should be put 

 to dry on "flakes" or nets so the air will have free access to all parts. It is 

 sometimes desirable to give slight pressure in which case they may be dried 

 between sheets of paper, or flat driers, like botanical specimens. ^Vllen thoroughly 

 dry they are put up in convenient packages and are ready for market. 



'^ The well known seaweed-isinglass, or agar-agar of Japan, is made from 

 an alga of the genus Gelidium. This genus has not yet been reported from the 

 Philippines. 



