INTRODUCTION. 209 



were described and figured. A few invertebrata are 

 also included in the " Atlas." 



Besides these three works, a few scattered papers have 

 been contributed by EiippeU to the Journals of Societies, 

 &c. Of these the most important appeared in the 

 " Museum Senckenhergianum," a scientific work pub- 

 lished at Frankfort (1834-37). 



About 1828-30 appeared the "Symbolse Physicae" 

 of Hemprich and Ehrenberg, a work of much research ; 

 but which, unfortunately, was given to the world in a 

 very incomplete state. It contains elaborate inscrip- 

 tions, in Latin, of several mammals, birds, and insects, 

 collected by the writers on the shores of the Eed Sea, 

 where Professor Hemprich died, one of the many 

 martyrs to science whp have fallen pi Africa. Some, 

 both of the mammals anji birds, had already been 

 described in RiippeU's " Atlas." The " Symbolse 

 Physicae " is a very rare work, and many of the 

 species of birds described, only a few of which are 

 figured, have been overlooked by subsequent writers. 



Eeferen^e has already been made at the commence- 

 ment of the geological part of this work to the labours 

 of Messrs. Ferret and Gabnier. The same officers made 

 large botanical and zoological coUectioijs, .descriptions 

 of which were published in the third vx)lume of their 

 Travels in 1847. The animals were identified by 

 MM. Guerin MeneviUe and Pe la, Fresnaye, and 

 descriptions of some new species of birds were pub- 

 lished by the former in the Revue et Magasin de 

 Zoologie for 1843, pp. 161, 162. These were figured 



p 



