ON COLLECTING OBJECTS. 



99 



ticularly good spots to find destnidlece, many species being in a very 

 contracted space. The most prolific bog is at Tunbridge Wells, near 

 a house known as Fisher's Castle, not far from Hurst Wood. There 

 is also a good one at Esher, at a spot called West-End. 



It must not be imagined that nothing can be obtained in this de- 

 partment of botany without going some distance from town ; but 

 assuredly only commoner and fewer species can be met with nearer 

 home. At the West India Docks are Synedra fasamdata, Gompho- 

 nenia curvata, Diatoma elongatum, Diatoma vulgare, Surirdla ovata, &c. j 

 and at this same place a few objects, not of the botanical class, as 

 Spongilla fluviatilis, Cordylophora lacttstris, AlcyoneUa stagnorwm, &c., 

 are obtainable in abundance in the autumn. 



In the ornamental water in St. James's Park may be found, Cocco- 

 nema lanceolatum, and other species of this genus, GomphoneTna cris- 

 tatum, &c. Epping Forest, about the neighbourhood of Leytonstone, 

 Snaresbrook, Wanstead, and Woodford Bridge, are also capital locali- 

 ties for the filamentous algse, especially the last-named, where NUella 

 translucens and Chara vulgaris abound."* 



On the north side of the Serpentine, Hyde Park, especially near 



the bridge, may be found : 



Cymbella macidata, 

 Gomphonema cristatum, 



ScenedesmuB quadrlcauda. 



„ obliquaa. 



Ankistrodesmus falcatus. 

 Pediastnim Heptactys. 

 Cocconema lanceolatum. 

 Ampliora oralis. 



Cocconeis placentula. 



Uvella hyalina. 



Gallionella numnmloides. 



Euastrum elegans. 



Pixidula operculata. 



Oladophora glomerata and Sphaero- 



plea oriapa, two of the filamentous 



algse. 



Mr. Topping, of New Winchester Street, Pentonville, has furnished 

 me with the following list of 100 interesting and popular objects pre- 

 pared by him : 



Tests: 



Navioula angulata. 



„ strigosa. 



,, formosum. 



Scales of Podura. 



„ Lepisma. 

 Hair of Indian bat. 



mouse. 



Larva of Dermestes. 



Triceratium from Thames mud. 

 Arachnaydiscus. 



* Quarterly Journal of Microscopical Science, 



Fos. Infusoria from Guano. 

 Fos. infiisoria, Barbadoes. 



„ Upper Bann, Ireland. 



„ Island of Mull. 



„ Tuscany. 



Infusoria from Thames mud. 

 Spicules of Gorgonia. 

 sponge. 

 >, „ fresh water. 



Gemmules of a sponge. 



Section of shell — Pinna. 

 „ „ crab. 



