CONCLUSION. CC3 



of the mouth ? Repeat the remark of Prof. Forbes. What is the 3rd Or- 

 der ? How distinguished ? What is said of the Gorgon-headed Star-fish ? 

 Of Asterias ? Of Ophiura ? To what mollusks are Star-fish peculiarly des- 

 tructive ? What is the 4th Order ? Are there many living sp. of this or- 

 der? What are the fossils called? What is said of the body, arms, &c. ? 

 What is said of the joints of the rounded stem? For what were they an- 

 ciently used ? What are they still called ? What sp. are mentioned and 

 what is said of them ? What is the 2nd Class of Radiates ? Why is it so 

 called ? What are their common names ? Give their characters and habits. 

 Which is the 1st Order? To what does the name refer? Has it any other 

 name? What gen. and sp. are noticed on the Chart? What does it say 

 of them? What is the 2nd Order? What animals does it include? What 

 did Cuv. call them? What is said of the Portuguese Man of War? What 

 other Radiates of this order are mentioned? What is said of them? What 

 is the 3rd Order? Why so named? What are the uses of the cilia? What 

 sp. are mentioned ? What is said of them r What 4th Order is added by 

 some naturalists? What is said of it? What is the 3rd Class? Give the 

 substance of what is said respecting it. Which is the 1st Order? Des- 

 cribe their characteristics, &c. Into what Sub-orders does Prof. D. divide 

 it? What sp. of the family Actinidae are mentioned? Give particulars 

 respecting them. What is said of the forms assumed by Corals, &c. ? What 

 2nd family is mentioned? What does Prof. D. say of the Astreea dome, 

 &c. ? What 3rd family is named? What is said of it? Name the other 

 families of this Sub-order. What families of the 2nd Sub-order are men- 

 tioned? What is said of them? Are the Coral islands entirely the work 

 of the Coral insects ? What has been said of these islands by Com. Wilkes 

 and others? Have the Coral insects been kept alive? Repeat the extract 

 from Lady Wortley's Travels. What is the 2nd Order? What is said of 

 it ? Into what families does Prof. D. divide it? Give the substance of what 

 is said of the Hydridae. What is the 4th Class? What several names have 

 been applied to these animals? Why termed Protozoa? How have the 

 Infusories been divided ? Of what are the former composed ? How are 

 the latter protected ? Why did Ehrenberg name them Polygastrica ? Into 

 what two legions did he divide them? What example is given of the first? 

 What gen. of the second is mentioned ? What is said of the Twilight Mo- 

 nad? Of the Vibrio? What are the breathing organs of the Infusoria? 

 What is said of their senses, reproduction, &c. ? . To what is the term For- 

 aminifera restricted? What is said of them? What of the Sponges? 

 Give a general view of these animals as presented on the Chart. 



CONCLUSION. 



We thus terminate our sketch of " Nature in Living Forms." 

 The reader or student of this volume, while surveying these 

 ' Forms," in their structure, their organs, and their variations 

 from a common type, beginning with MAN, who stands in high 

 pre-eminence at the head, and passing downward until reaching 

 the group we have last contemplated, in which are discoverable 

 but the faintest traces of animal existence, and marking, too, in 

 his progress the adaptation of all to the stations and offices for 



