YAL BOTANIC GAEDENS, DUBLIN. 



'YAL BOTANIC GAEDENS, LIVERPOOL 



YAL BOTANIC GAEDENS, CAMBEIDGE. 



YAL WINTEE GAEDEN, DUBLIN. 



YAL DEPAETMENT OF SCIENCE AND AET, LONDON. 



*'S PATENT IMPEi ) \ W ATEE BOILEES 



-2 



MOST EFFECTIVE AND 



