ho 
~] 
INDEX 1 
Mining Sponge 67 
Material needed for a full lesson on sponges 102 
Net Sponge 40, 50 
Odor of Horny Sponges 41 
*« *¢ Spiculigenous Sponges 68 
Other Horny Sponges 39 
Pachychalina rubens 66 
Palm Sponge 66 
*¢ color of 73 
‘* habits of 71 
Pandaros 66 
Parasites of Horny Sponges 56 
Pipe Sponge 55 
Poriferae 8 
Preface 2 
Preparation of Sponges for scientific use 104 
Preparing skeletons of sponges 109 
Propagation of sponges 18 
Province II, Sponges 8 
Price of Horny Sponges 56 
Red Sponge 66 
Color of 75 
Habits of 72 
