SCIENCE- GOSSIP. 



SCIENTIFIC KITES. 



THE WONDER OF THE AGE. ANY CHILD CAN FLY THEM. THE SHIP KITE. THE BLUE HILL BOX KITE. 



MOST INTERESTING FOR METEOROLOGICAL INVESTIGATION OR AMUSEMENT. 



THE SHIP KITE sails on the wind as if riding on the waves, the sails are so 

 ingeniously arranged that in catching the wind they drive the ship upward instead of in 

 a lateral direction. They afford an endless amount of amusement to adults as well as 

 children. Kites of this type have attained the height of two miles. They go straight up 

 from the hand like a bird. Will fly io a moderate breeze, and yet no wind short of a 

 gale is too strong for them Folds up into a neat, flat package. 



THE BLUE HILL BOX KITE is the invention of H. H. Clayton, Chief Observer 

 at the Blue Hill Observatory, near Boston, and is used for Aerial Observation purposes, 

 or amusement. Kites of this type have attained the height of two miles, have remark- 

 able lifting power, and serve splendidly to raise weights into the air, such as Cameras, 

 for photographing the country, Barometers for getting the pressure of the air at different 

 heights, Thermometers, and other weather-recording instruments. 



From the New York Herald, March 3rd, 1899:— "New Kite-Flying Record. 

 Recording Instrument carried up over two miles at Blue Hill, Boston, 

 Mass. — The record for high kite-flying was broken at the Blue Hill Observatory, 

 Tuesday, when 12,507 feet above fhe sea-level was reached by a recording instrument 

 attached to a string of tandem kites. This is 383 feet higher than the preceding best 

 record, made at the same place on August 26th. At the highest point of flight the 

 temperature was twelve degrees and the wind velocity fifty miles an hour." 



Prices :-Blue Hill Box Kite, Is., 2s., 2s. 6d., 3s. 6d., 5s. 6d. Ship Kites, 7s. and 10s. 



JAS. PAIN & 



SONS, 121 Walworth Road, LONDON, S.E. 



And Agents throughout Great Britain. 



Lecture Table Sivitchboard. 



T. TAMBLYN-WATTS, 



SCIENTIFIC APPARATUS MAKER, 

 GOLDIELANDS, SETTLE, YORKS. 



A. C. COSSOR, 



ORIGINAL MAKER OF " X " RAY 

 TUBES IN ENGLAND. 



67 FARRINQDON ROAD, LONDON, E.C. 



FOCUS TURES giving finest possible definition. 

 FANCY TUBES of various kinds. 



IMPROVED TUBE HOLDERS, with arrangement for securing 



wires to avoid perforation of tube. 



All kinds of (( X " Ray Apparatus, Mercury Pumps, Screens, 



Spark Gaps, etc. 



W MOST OF THE RADIOGRAPHS illustrating Mr. Quick's 



Articles in Science-Gossip were taken witn COSSOR TUBES. 



All kinds of EXPERIMENTAL GLASS-RLOWING carried out 



for Scientific Men, Laboratories, &c. 



Applications for Price List invited. 



THE Z00L0CIGAL SOCIETY'S GARDENS, 



REGENT'S PAKE. 



Are OPEN DAILY (except Sundays), from 9 A.M. till Sunset. 

 Admission is. ; on Mondays, 6d. ; Children, 6d. 



ROYAL BOTANIC SOCIETY'S GARDENS, 



REGENT'S PARK. 

 GARDENS OPEN DAILY from 9 a.m. to Sunset. SUNDAYS 

 from 2 P.M. to Sunset. Admission by Orders from Fellows of the 

 Society only. 



SPECIAL SEBIES OF 



STUDENTS TELESCOPES 



From 4^ in. to 2I in. apertures, with first quality Object 

 Glasses and Fittings at moderate prices. 



List of 



Photographic 



Lenses 



Free. 



High-Class 



Photographic 



Lenses, 



with Iris or 



other 

 Diaphragms. 



Illustrated Catalogue of Telescopes, Microscopes, &c. &c.,for stamp. 



Highest Class Micro = Objectives, also made on 

 premises, at Closest Prices. 



W. WRAY, 



0Pt Highgate, LONDON, N. 



PflMMEMPIT Cheapest and Rest 



UUIflillCNbC Cameras and Lenses, 



PHOTOGRAPHY. "£T sites 



Photo-micrographic Outfit, 50s. 



Stereoscopic Cameras, Stereoscopes, Slides, &c. 



HENRY EBBAGE, Hall Quay, Great Yarmouth. 



