TYPICAL OBJECTS IN NATURAL HISTORY. 123 



Subordo III. Z. tabulata. 



Fam. 8. Milleporidae Millepora alcicornis. 



9. Favositidae. 



Tribus 1. Favositinae Favosites Gothlandica. 



2. Chsetetinse Chcetetes radians. 



3. Halysitinae Halysites escharoides. 



4. Pocilloporinae .... Pocillopora acuta. 

 Fam. 10. Seriatoporidae Sei-iatopora subulata. 



11. Thecidse Thecia Sivinderniana. 



Subordo IV. Z. rugosa. 



Fam. 12. Stauridse Stauria astreiformis. 



13. Cyathaxonidae Cyathaxonia cornu (fossil). 



14. Cyathophyllidae .... 



Tribus 1. Zaphrentinae Zaphrentis patula (fossil). 



2. Cyathophyllinse . . Cyathophyllum helianthoides 



(fossil). 



3. Lithodendroninae . . Lithodendron irregulare 



(fossil). 

 Fam. 15. Cystiphyllidaa Cystipkyllum Siluriense (fossil). 



VEGETABLE KINGDOM. 



Dried plants from the Herbarium cannot be advantageously displayed in 

 glass cases. The following method may be adopted for the Typical Epitome: — 

 a iew wax models of flowers, with figures of such parts as require to be 

 magnified; but especially entire fruits, with dissections exposing the seed 

 and embryo. As a general plan for fruits and seeds, there should be ex- 

 hibited, — 



1. Entire fruit, dried or (where succulent) modelled in wax. 



2. Section of the pericarp to expose the seed in position. 



3. Entire seed. 



4. Section of seed to expose the embryo. 



5. Embryo. When minute, it may be preserved as a microscopic object, 

 and accompanied by a figure of it magnified. 



These preparations should be protected against the attacks of insects, by 

 being steeped in a solu'ion of corrosive sublimate. 



In addition to the illustrations displayed in the Epitome, dried specimens 

 and figures may be arranged in a " Typical Herbarium." 



If the following plan of drawing up a joint list of objects for the " Typical 

 Herbarium," and the Epitome to be exposed under glass, should be approved, 

 it will be continued in a Second Report. J. S. Henslow. 



