NOTE ON MIHAKOWICS* NEW METHOD OP IMBEDDING. 329 



almost invisible in the preparations. Some difficulty is 

 experienced in transferring the tissue and warm jelly to the 

 cavity in the liver before the jelly sets or becomes stringy. 

 A teaspoon, previously heated in boiling water, is a most 

 convenient instrument for the purpose. This method sup- 

 plies a want which has long been felt. It is eminently 

 adapted, for the preparation of sections of structures contain 

 an abundant calcareous skeleton, and which are apt to 

 collapse on the removal of this by acids, such as Echino- 

 derms, corals, &c., but no doubt it will yield equally good 

 results in such structures as Corti's organ, insects' eyes, 

 &c., where it is desirable to retain in situ in a section a 

 number of elements which have no organic connection or 

 a very slight one with one another. 



