XI. INSTRUCTION. 991 



The preparations which have been sent are intended as specimens for 

 zoological instruction in the higher class educational establishments. They 

 can be continually renewed by any teacher, and are not liable to destruction. 

 and will raise the standard of the objects concerned in teaching. They 

 attracted the notice of the judges in the Vienna Exhibition, and gained a 

 medal as a mark of merit. 



These and the following preparations were constructed for the exhibitor by 

 Rudolph Roch, of Munster, manufacturer of anatomical preparations. 



3878a. Two Preparations. Heads of children. 



Ph. Owsiannikoff, University of St. Petersburg* 



These preparations are' taken from the Anatomical Museum of the Academy 

 of Science at St. Petersburg ; they were bought by the Emperor Peter the 

 Great, in the year 1717, from the eminent anatomist of Holland, Ruy sen 

 (1638-1731), with his whole excellent collection. 



The lessons of anatomy, the nervous system especially, must be demon- 

 strated by preparations. Most of these preparations in spirit cannot be long 

 preserved. The preparations of Ruysch, though very old, are extremely well 

 preserved. The collection of preparations by Ruysch at the Anatomical 

 Museum of the Academy of Science at Petersburg is unique in Europe. 



3879. Horizontal Section of the Eye-ball through its 

 meridian in a child six months old. 



Anatomical Institute, Erlangen {Prof. Dr. B. Gerlach). 



3880. Horizontal Section of the Tympanic Cavity and 



the cochlea of a child 10 months old. 



Anatomical Institute, Erlangen (Prof. Dr. B. Gerlach). 



3881. Frontal Section of the Head of a Child six months 

 old through the cavities of the pharynx and mouth. 



Anatomical Institute, Erlangen (Prof. Dr. B. Gerlach). 



3882. Median Sagittal Section through the Head of a 

 Child four months old. 



Anatomical Institute, Erlangen (Prof. Dr. B. Gerlach). 



3883. Lateral Sagittal Section through the Head of a 

 Child four months old. 



Anatomical Institute, Erlangen (Prof. Dr. B. Gerlach) . 



3884. Horizontal Section through the Neck of a Child 



six months old. 



Anatomical Institute, Erlangen (Prof. Dr. B. Gerlach). 



3885. Horizontal Section through the W eck of the same 

 Child somewhat deeper. 



Anatomical Institute, Erlangen (Prof. Dr. B. Gerlach). 



3886. Three Longitudinal Sections through the Heart 

 of a Child 32 days old. 



Anatomical Institute, Erlangen (Prof. Dr. B. Gerlach). 



3887. Two Sections through the Larynx of a Child six 



months old. 



Anatomical Institute, Erlangen (Prof. Dr. B. Gerlach). 



