8 The Ameritun Naturalist. (June, 
z A DEPARTMENT OF LABORATORY SUPPLY 
has been established in order to facilitate the work of teachers and 
others at a distance, who desire to obtain materials for study or for 
Ra instruction. Certain sponges, hydroids, starfishes, sea-urchins, 
ne worms, crustaceans, molluscs, and vertebrates are generally — 
peut in stock, though larger orders should be filled some time before 
the material is needed. Circulars giving information, prices, etc., may 
be obtained by addressing the Collector, Mr. F. W. Walmsley, Woods 
Holl, Mass. ; 
