AMNH LIBRARY 



SCIENCE-GOSSIP. 



100164819 



JOHN J. GRIFFIN & SONS, LTD., 



Clieiiiical, Philosophical, and Photographic Instrument Makers. 



V IKEKS TO THJ. A I' \l I RA I.TV. WAR II /-.PAKTM EAH: IXIVA >i- COI.O.V/A/. COrj:R.\.1/I£,\'TS. 



Physical and Chemical Apparatus of E very Description. 



HOT AIR MQTQIS. 



NO NOISE. NO SM^^. 



Invaluable in a Laboratory or Workshop, '\\ , 1 



■ : ^-::i3fu 



As ihe full pc.wer can \k ohtaineil 

 in less llian five minutes. 



Gas not Essential. Spirit Burner Sufficient. 



\'arious Sizes, from tV to |- HorsL'-po\\-er. 

 Full particulars on application. 



20-26, SARDINIA STREET, 

 Lincoln's Inn Fields, 



LONDON, W.O. 



JAMES J. HICKS, 8.9,& 10, Hauon Garden, London, 



SCIENTIFIC INSTRUMENT MAKER TO THE WAR OFFICE, 

 INDIA OFFICE, ADMIRALTY, &c. 



IS SOLE JMAKER OF THE NEW 

 PATENT - ■" 



MOl'NTAIN ANEROin BAROMETER. 



Thi-: only Aneroid that can he tjiroun in and | 

 out of action as required, and which, when 

 out of action, is absolutely impervious to the i 

 influence of variiitions in atmospheric pres- ' 

 sure. Travellers and Surveyors will now he 

 able to ascertain cnrmt altitudes owing- to 

 the marvellous accuracy of this Instrument, 

 which is described at lenfi^th by Mr. WHy.MPKK, 

 the disting-uished Alpine climber, in the 

 " Times" of December 17, i8g8. 



It is made in Aluminium for lig^htness. iii 

 either ^^-inch or 4A-inch sizes, with Sling 

 Leather Case. 



Scale to 



PRICIiS: 



Scale to 





5,000 feet 



■ £5 S'S. I.T'OOO f'2''"t 

 . £5 10s. -'0,000 ., . 



. £5 15s. 

 . £6 OS. 



HICKS'5 famous Student's MICROSCOPE 



{Rigltt-hand I Uuslration) 



With A EyepicCL-, Doubli.- Mirror, Brass Slipplnif Stage. Sliding Draw Tulic ^ in. 



long, I Objective dividing .{, J and i incli, Coarsi; and FinaAdjustmciit. I.ivv 



Cagv, I'orceps aiid Condcnstrr, in neat Mal-iogan\' Cabinel. with loek and key. 



Price, £3 15s. Od. 



MAKER of all kinds of Standard Barometers and Thermometers. 



Illuslraled H.lee Lists FREE on Applieation. 



LoNUON : Printed by the Uoiol.PH Prkss, LniitKn, Sueedland Court. Bishopsgatc Street, and Middlesex Street. E.C. 



