JOURNAL OF MICROSCOPICAL SCIENCE. 



DESCRIPTION OF PLATE IV, 



Illustrating Mr. G. Rainej's Paper on some further Experi- 

 ments and Observations on the Mode of Formation and 

 Coalescence of Carbonate- of- Lime Globules, and the 

 Development of Shell-tissues. 



Tig. 



1. — Shows globules of carbonate of lime, with amorphous matter in the 

 centre. 



2. — ^Two globules with amorphous matter between them. 



8. — ^The same two globules increased in size, and the intervening amor- 

 phous matter removed. 



4. — Globules of carbonate of lime, with small globules in the centre, 

 surrounded by a layer of coalesced globules. 



5. — The half of an otolithe of a Stickleback. 



6. — The half of an otolithe from a small White-bait. 



7. — The carbonate of lime deposited on a slide, showing the crystalline 

 form gradually passing into the globular. 



