846 SEC. 18. BIOLOGY. 



3949b. Case, with two cautery handles, and six small 

 cauteries for dentists. 



Kgl. chirurgische Klinik (Prof. Dr. Fischer), Breslau. 



3949c. Case, with larynx instruments. 



Kgl. chirurgische Klinik (Prof. Dr. Fischer), Breslau. 



3949 d. Complete Case. 



Kgl. chirurgische Klinik (Prof. Dr. Fischer), Breslau. 



3949e. Case, containing the most necessary cauteries for 

 geons. 

 'gl. chirurgische Klinik (Prof. Dr. Fischer), Breslau. 



practical surgeons. 

 Kal. chi. 



395O. Hatching Apparatus at a uniform temperature ; 

 length 57 c., width 23, height 70 centims. 



The apparatus was made in 1850, but not described. In the interior of 

 the hatching apparatus is placed a metallic thermometer the vertical axis of 

 which passes through the bottom, and carries, underneath the hatching appa- 

 ratus, a horizontal branch. At the end of the latter there is a chimney which, 

 at a given temperature, is brought over the flame and diverts the hot air from 

 the chimney which is placed in the water of the apparatus. 



Professor Theodore Schwann, Liege. 



395Oa. Apparatus for Aerating the water in Aquaria. 



Professor U. J. Van Ankum, Director of the Zoological 

 Laboratory of the University of Groningen. 



395Ob. Elevations and Flan of the Laboratory for 

 Biological Research, presented to the Royal Gardens, Kew, by 

 T. J. Phillips Jodrell, Esq. 



First Commissioner of H.M.'s Office of Works. 



3950c. Model of a Cupboard 3' IV high; 2' broad; 1 

 deep, enclosing 2 cylinders. 



1. A whole one with 4 circular shelves. 



2. A half one to show the internal structure of the whole. 



Laur Esmark, Christiana. 



The shelves are made to .save room in the museums in arranging specimens 

 preserved in spirits of wine. The cylinders are to be turned round, so that the 

 glass jars, which are placed along the periphery of the circular shelves, can be 

 easily seen or taken out, instead of their being arranged as is generally the 

 case in museums in a straight line, taking double or treble space. In some 

 glass jars is to be seen the manner in which the specimens are fixed to glass 

 treads, which prevent their coming in contact. 



3950d. Page's Gas Regulators (2). E. Cetti. 



3950e. G-eissler's Gas Regulator. E. Cetti. 



