798 
Sßcretit ber greunbe ber SJiaftmjcfdjidito in SReflenDurg. 2trdjiti, 
|jeft 5. 9teu6ranbentmrg 1851; 8°. 
93ereiit, öjlerreidjifcfyer Ingenieurs, 1850. cd. 1—21. 
SBien; 4°. 
Verein, naturforschender zu Riga, Correspondenzhlall 11, 12. 
Riga 1851; 8°. 
©ufjüad), (gonftant. £>ie ©imdjhwter ber ^olett, fyijlotifd) 
erläutert, Sffiieit. 1852 ; 8°.