Before a watch is ready for the pocket, the component parts thereof must have passed through the hands of not less than _an hundred and fifty different workmen_. The fifteen principal branches are: 1. the movement maker; who divides it into various branches, viz. pillar maker, stop stud maker, frame mounter, screw maker, cock and potence maker, verge maker, pinion maker, balance wheel maker, wheel cutter, fusee maker, and other small branches; 2. dial maker, who employs a capper maker, an enameller, painter, &c. 3. case maker, who makes the case to the frame, employs box maker, and outside case maker, joint finisher. 4. pendant maker; (both case and pendant go to the Goldsmith's Hall to be marked.) 5. secret springer, and spring liner; the spring and liner are divided into other branches; viz. the spring maker, button maker, &c. 6. cap maker; who employs springer, &c. 7. jeweller, which comprises the diamond cutting, setting, making ruby holes, &c. 8. motion maker, and other branches, viz. slide maker, edge maker, and bolt maker. 9. spring maker, (_i.e._ main spring.) consisting of wire drawer, &c. hammerer, polisher, and temperer. 10. chain maker; this comprises several branches, wire drawer, link maker and rivetter, hook maker, &c. 11. engraver, who also employs a piercer and name cutter. 12. finisher, who employs a wheel and fusee cutter, and other workers in smaller branches. 13. gilder is divided into two, viz. gilder and brusher. 14. glass and hands, the glass employs two, viz. blower and maker; hand maker employs die sinker, finisher, &c. 15. fitter in, who overlooks the whole, fits hands on, &c. The above 15 branches are subdivided again and again. * * * * * This day is published, price 5_s_. with a Frontispiece, and thirty other Engravings, the ARCANA OF SCIENCE, AND ANNUAL REGISTER OF THE USEFUL ARTS, FOR 1829. The MECHANICAL department contains ONE HUNDRED New Inventions and Discoveries, with 14 _Engravings_. CHEMICAL, SEVENTY articles, with 2 _Engravings_. NATURAL HISTORY, 135 New Facts and Discoveries, with 7 _Engravings_. ASTRONOMICAL and METEOROLOGICAL PHENOMENA--35 articles--6 _Engravings_. AGRICULTURE, GARDENING, and RURAL ECONOMY, 100 Articles. DOMESTIC ECONOMY 50 Articles. USEFUL ARTS, 50 Articles. FINE ARTS. PUBLIC IMPROVEMENTS. MISCELLANEOUS REGISTER, &c. "We hope the editor will publish a similar volume annually."--_Gardener's Magazine._ End of the Project Gutenberg EBook of The Mirror of Literature, Amusement, and Instruction, by Various