990 SEC. 18. BIOLOGY. 



This model has been moulded by the exhibitor accurately from nature, by 

 13 sections in successive planes through a firmly frozen leg. The advantages 

 of such models for teaching, in lieu of the imperfect representations which 

 have hitherto been used, are self-evident. 



Models of other parts of the body similar to this have already been taken 

 in hand by the exhibitor. 



3868. Section of Head. 



Ramme and Sodtmann, Hamburg, 

 By these anatomical models in papier mache, the exhibitors intend to give 



ji general insight into the structure of the human body to scholars and 



intelligent people. The aim of the exhibitors has been to combine accuracj^ 



with the greatest possible cheapness and durability. 



Some of the models are taken from drawings by Dr. Simon, and some from 



those by Dr. Dehn. 



3869. Head, with Muscles. 



Ramme and Sodtmann, Hamburg. 



3870. Model of the Ear enlarged, without muscles. 



Ramme and Sodtmann, Hamburg. 



3871. Eye enlarged. Perpendicular section. 



Ramme and Sodtmann, Hamburg. 



3872. Larynx, &c., natural size. 



Ramme and Sodtmann, Hamburg. 



3873. Lung. Perpendicular section. 



Ramme and Sodtmann, Hamburg. 



3874. Larynx and Lungs, in separable parts. 



Ramme and Sodtmann, Hamburg. 



3875. Model of Thorax, in separable parts. 



Ramme and Sodtmann, Hamburg. 



3876. Digestive Apparatus. 



Ramme and Sodtmann, Hamburg. 



3877. Perpendicular Section of Skin. 



Ramme and Sodtmann, Hamburg. 



3878. Biological Preparations for teaching zoology : 



1. Sphegidce. Family of the carnivorous wasps, showing the 

 rapacious manner of life and dwelling, with their victims. 



2. Megachile betulina, a bee which cuts off a portion of birch 

 leaf, showing its dwelling, with the piece of the leaf bitten off. 



3. Bombus lapidarius, the mason bee, with construction of 

 comb. 



4. Myrmecoleon formicarius, the antlion, its funnel shaped-pit, 



larvae, cocoons, &c. 



5. Locusta viridissima, deposition of eggs and development. 



6. Insects in amber, and their origin. 



Prof. Dr. H. Landois, Milnstcr, Westphalia. 



