336 Catalogue of Fossil Fish. 



probable the ilforus cucullata is meant ; and this last is 

 propagated in British nurseries]. Cultivation. Soil and situ- 

 ation. Dwarf mulberry tree plantations. Gathering the leaves. 

 Habitations, hurdles, &c. Division oflabour. Mode of mak- 

 ing silk in Turkey and Italy. Silkworms : amount of food, 

 hatching, feeding, diseases, labour of attendance, and care of 

 attention. Formation of cocoons. Cocoons for producing 

 eggs. Stifling of pupas in the cocoon. Reeling. Second and 

 successive crops of silk. Modern system of Count Dandolo 

 and M. Bonafoux. Weight and produce of cocoons. Produce 

 of silk, and profits on its manufacture. Silk establishments in 

 America. 



On the Anatomical and Optical Structure of the Crystalline 

 Lenses of Animals ; being the Continuation of the Paper pub- 

 lished in the Philosophical Transactions for 1833, by Sir 

 David Brewster ; 



Is the title of a treatise of which the reading was commenced 

 ata meeting of the Royal Society, on Dec. 10. 1835, according 

 to information in the Philosophical Magazine,May, 1836; where 

 an abstract of the part that was read is given. Any one who 

 may use this treatise in the study of the subject may, and it 

 is not unlikely, find useful more or less correlative information 

 in a treatise entitled " An Account of the Discoveries of 

 Muller and others in the Organs of Vision of Insects and 

 the Crustacea. By George Parsons, Esq. ;" published in 

 the Magazine of Natural History, IV. 124 — 134. 220—234. 

 363—372. 



Catalogue of Fossil Fish in the Collections of Lord Cole and Sir 

 Philip Grey Egerton, arranged alphabetically, with References 

 to the Localities, Geological Positions, and published De- 

 scriptions of the Species : by Sir Philip de Malpas Grev 

 Egerton, F.R.S. F.G.S. 



This is the title of a treatise published in the London and 

 Edinburgh Philosophical Magazine, the Number for May, ] 836, 

 which the author has presented, " in the hopes that it may 

 prove of interest to the geological adept, as exhibiting in a 

 tabular form the stratigraphical position of 227 species; to 

 the student in fossil ichthyology, as affording a clew to the de- 

 positories of many new and rare specimens destined to appear 

 in the forthcoming numbers of Dr. Agassiz's Recherches sur les 

 Poissons Fossiles." 



