Sir, - Bosco Hogan (September 19th) wonders if he is alone in finding the Speed Bump cartoon unamusing. This has me worried. Am I, perhaps, the only person to find it funny? While, admittedly, there have been some less amusing speciments, the cartoons overall have been a constant source of anything from a gentle chuckle to a loud laugh. In fact, it is on Speed Bump-less days that I wonder whether I am getting my money's worth from The Irish Times. - Yours, etc.,Karin R. M. Band,Surbiton,Surrey,England.