240 ACCOUNT OF BOOKS. 



Young's fyllabus and energy ; prefliire ; equilibrium ; rotatory power ; pre* 

 kfturcs.° P Ca P onc ^ erance l practical mechanics in general ; geometrical in- 

 ftruments ; perfpe&ive ; ilatics ; friction ; paflive ftrength ; 

 architecture; carpentry; wheel-work; union by twilling; 

 economy of motion ; time-keepers ; raifing weights ; friction 

 . wheels ; .carriages ; compreffion and extenfion ; penetration 

 . and attrition ; trituration and demolition. Part II. Hydro- 

 dynamics. Of hydroftatic equilibrium ; floating bodies ; fpe- 

 cific gravity; pneumatic equilibrium; hydraulics; refiftanee 

 of fluids ; hydraulic machines ; pneumatic machines ; found ; 

 harmonics ; properties of light ; dioptrics and catoptrics ; 

 optical inftruments ; phyfical optics ; nature of light. Part III. 

 Phyfics. Of the fixed flars ; the fun; primary planets; 

 fecondary planets ; comets ; laws of gravitation ; fenfible 

 effects of the celeflial motions ; practical aftronomy ; geogra- 

 phy ; tides ; general properties of matter ; heat ; electricity ; 

 magnetifm ; meteorology ; natural hiftory. . Part IV. Mathe- 

 matical Elements. Of quantity and number ; fpace ; the 

 compajifon of variable quantities; the properties of curves; 

 practical rules and tables. 



The whole work is beautifully printed, and fuch demon- 

 flrations as occur are diftinguifhed from the narrative or 

 enunciation by a fmaller type. The figures are extremely 

 neat. A fifth part is mentioned as probably hereafter to ap- 

 pear, containing a catalogue of the bell: authors. 



Mr. BLAIR's POPULAR LECTURES. 



Mr. Blair has recently commenced a courfe of popular 

 lectures, at the Bloomfbury Difpenfary, for the information of 

 fcientific perfons, amateurs of natural hiftory, and ftudents in 

 the liberal arts. He propofes to explain and illuftrate the 

 following fubjects, on Tuefday evenings, at eight o'clock : 



On the component parts of the body — the bones, cartilages, 

 and ligaments — mufcles, and mufcular action — the integuments 

 and membranes — brain, nerves, and fenfation — the heart and 

 vafcular fyftem— -the blood, circulation, and abforption — 

 glands, fecretions, and excretions — refpiration and animal 

 heat — digeftion, nutrition, and growth — utero-geltation, and 

 parturition — the eye, and phenomena of vilion — functions of 

 the ear, nofe, and mouth — phyliognomy, beauty, and the 

 |>affions. 



