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International Exhibition Prize Medals and Awards, 1851, 1855, 1862, 1873, 1878 ; and 

 Tlie Imperial Austrian Francis Joseph Order, for Excellence and Cheapness. 



M. PILLISOHEH'S ISTE^V MICROSCOPE, 



a 



THE INTERNATIONAL," 



Is furnished with B and C Eye-pieces ; a 5-8 and 1-1 Object-glasses of high defining and penetrating quality, 

 combining (by a draw-tube) a series of eight different powers, from 50 to 420 diameters; bull's-eye con- 

 denser; revolving diaphragm; pair of tweezers; plate-glass slips and thin covering glass, and a well-made 

 mahogany box, 10 by 6 by 4, with lock and key Price £7 lOs. 



With the addition of A Eye-piece, H or 2 in. Object-glass, Polarising Apparatus and 



Selenite, and a Camera Luoida Price £10 lOs. 



And all the Apparatus and Accessories, as described above, with the addition of a 

 D Eye-piece and a 1-9 Object-glass, giving a series of twenty-eight magnifying 

 powers, from 15 to 1000 diameters Price £14 OS. 



A Glass Stage, to prevent the instrument from being affected by the use of corrosive 



chemicals, to any of the above instruments, extra 128, 6d, 



88, ISTEATT- B03SrX3 STREET, L03Sri301Sr, ■W, 



A WEEKLY RECORD OF SCIENTIFIC PROGRESS. ILLUSTRATED. 



The Contributors to the above Journal are the leading representative Scientific men in 

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229, BROADWAY, NEW YORK. 



Sample Copies (price 6c;.) of SAMUEL DEACON, Leadenhall Street, London. 



THE BRITISH MOSS FLORA. 



By R. BEAITHWAITE, M.D. 



Pakt v., with four Plates, commencing the Second Section, is now ready, price 4«. 

 Subscriptions (10s. 6d.) may be sent to the Author during the month. 



The previous Parts — Andreieacete, with two Plates ; Buxbaumiacese and Georgiacea', with two Plates ; 

 Polytricbaceae, with five Plates; and Fissidentacea, with three Plates, may be had from the Author, at 

 303, Clapham Road, London. 



Part VI., continuing Dicbanaoe2e, is in preparation. 



