Scientific Intelligence^ ^c. 77 



Xlll.— Silk Worms. 



Professor Livini found the composition of the shells of the silk-worm 



to be in 45 parts : 



Water, ammonia and empyreumatic oil . 19-630 



Carbonic acid 7-030 



Carbonaceous matter 16 910 



Silicate of potash 0*480 



Sulphate of potash 0*060 



Carbonate of potash 0*080 



Carbonate of lime 0*366 



Phosphate of lime 0*080 



Peroxide of iron 0*175 



Carbonate of magnesia 0*072 



44*883 

 Gas contained in the cocoon consists of 



Oxygen . . 15 

 Carbonic acid . 10 

 Azote ... 75 



100 

 Liquor secreted by the silk worm moth, contains 



Animal resin 1*000 



Uric acid 2*000 



Impure matter 0*800 



Phosphate, urate of ammonia, ^ -• oq 

 acetate of potash and acetic acid S 



5*000 

 Memorie del Accad. di Torino, xxxvi. 30. 



XIV. — British Association for the Advancement of Science. 



We understand that the next meeting of the British Association 

 will be held at Bristol during the week commencing on Monday, 

 the 22nd August, and that the Members of the General Committee 

 will convene on the Saturday preceding. 



XV. — Notice of New Books. 



The Rev. Professor Henslow, of Cambridge, has engaged in a 

 New Work, to be called THE BOTANIST. It will be conducted 

 by Mr. Maund, the author of the Botanic Garden, and is to combine 

 all interesting points of the science, with popular and practical in- 

 formation. No. 1 will appear on the first of August. 



Early in August will appear the First Number of " THE 

 NATURALIST," illustrative of the Animal, Vegetable, and Mi- 

 neral Kingdoms (to be continued Monthly) with highly finished 

 coloured Engravings, and illustrated with Wood Cuts. Conducted 

 by B. Maund, F. L. S., and William Holl, F. G. S., assisted by 

 several eininent Scientific Men. 



