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Can LSD cause abnormalities in unborn children if taken by the mother and/or father prior to préegnancy? How does tolerance develop and dissipate? It appears that both development and dissipation are rapid, but more research is needed before definite concluâ€" sions can be drawn. Some researchers believe that longâ€"term use of cannabis may result in phychic dependence, chronic lethargy â€" and (when smoked) lung damage. It is not certain however, what portion. of any large group of users will suffer such consequences. It is also not clear whether the damâ€" age seen in some countries is due Although it is known that many marihuana users also use other drugs, there is no reliable inforâ€" mation about the proportion of marihuana users who do so. It is also not certain which drug is most often used first. What is the proportion of "bad trips" among users who obtain LSD illicitly? What is the specific action of LSD on the brain? While some espects of its action are now unâ€" derstood, there is more to be learned. Can the drug cause irreversible brain damage? Why do hallucinaâ€" tions sometimes recur? Can LSD damage unborn children if taken during pregnancy? to the use of cannabis or to the type of life with which it is asâ€" sociated. It is important to examine what is not known about these drugs. The addiction research foundation lists the following questions: our society. Many articles quote what is know about such things as cannabis, LSD, opiates, ampheâ€" tamines, â€"tranquilizers, solvents and alcohol. By ROLAND HERSEN Much has been written regardâ€" ing the use and abuse of drugs in enough to cause a painful or erippling injury to a bystander. To offset this hazard, the Canâ€" adian Standards Association has announced development of a series of tough mechanical and safety requirements for electric powered lawn mowers. Any manufacturer seeking CSA certification for his product must make it conform to these requireâ€" ments, which were devised by Canadian _ manufacturers, _ conâ€" sumers, government experts and others, The new regulations cover blade guards, catcher assemblies, grass discharge openings, cutting TORONTOâ€"Power mowers can be lethal if the whirling blade picks up a bit of stick or stone from your lawn. It can fire the abject through a discharge openâ€" img in the blade guard hard Mental health Much to be learned about drugs â€" Powered mowersâ€" . Waterice Chrenicle, Thureday, May~21, 1970 25 University Avenue East, Waterloo One Hour Service At No Extra Charge ONE HOUR "MARTINIZING" the North, clad in parkas and armed with spears. They met a white polary bear (who bore a strong resemblance to David Whitney) stalking among the cardâ€" board icebergs and together Esâ€" kimos and bear performed, a spear dance. However, there was a lot of territory to cover in 1% hours, so the Grade 2s emerged on slage to sing the ethnic songs and perform the square dances of the prairies. j Pupils from Grade 6 had the best of both worlds. They not only showed what British Columâ€" bia is like today, but built a timeâ€" machine to take them back ‘to the province‘s early days. When a bent, bewhiskered Kenâ€" neth Grenville Dykes pushed the right buttons on the time machâ€" ine, the audience got a view of Viking ships at anchor off the coast. Another switch pressed and a birchâ€"bark canoe hove in sight. It only took a little imagination to see fur trading Simon Fraser at the prow exploring the river named for him. How common is psâ€"ychological dependence in thearapeutic use of amphetamines? In nonâ€"thera Which method of opiate treatâ€" ment is most effective for a parâ€" ticular patient? Opiate dependâ€" ence appears to be so individual that the results of specific treatâ€" ment methods cannot be predictâ€" ed with much accuracy. Can LSD cause leukemia by damaging blood cells of the user? Is LSD valuable in psychotherapy and in the treatment of alcoholâ€" ism and other forms of drug deâ€" pendence? FROM PAGE 1 _ They must also be of a certain minimum size so as to severely limit the area into which objects may be flung by the blade. The opening must not point toward the operator. be a certain minimum distance from the blade tip or must have a rigid bar fastened across the discharge opening to guard againâ€" st a bystander or operator‘s foot inadvertently _ contacting _ the must fulfill various safety speciâ€" fications, such as extending to or below the lowest blade position and having no more than two grass discharge openings. Grass discharge openings n‘&t blades, operating instructions and cautionary markings. MA The fastener holding the cut Punkeydoodle trip of song Open Daily 7:30 a.m. â€" 7:00 p.m. Saturday 8:00 a.m. â€" 6:00 p.m. THE MOST IN DRY CLEANING However, it wasn‘t long before the Newfy jokes fell > flat and Maritimer and Ontarian began to understand each other a little betâ€" ter and appreciate what each could offer the other. When the young Canadian singâ€" ers, dancers, authors and actors gathered on stage at the end to tell the audience why they felt they had a country to sing about, Northdale‘s teachers had every right, too, to feel their endeavors were worth singing about. When the Punkeydoodle bus dropped off a contingent of Onâ€" tario tourists in the Maritimes, the latter showed all the superiorâ€" ity they felt for the Maritimers‘ way of life and outlook. French songs and a play about a cat who could speak were conâ€" tributed by Grade 3s. Kim Strickâ€" ler (in the cat‘s role) made a striking pose in front of the glowâ€" ing log fire of a Quebec home. Grade 4 pupils presented glimpâ€" ses of life in Ontario, concentratâ€" ing particularly on Waterloo County and its early Mennonites. How are people under medical treatment with amphetamines afâ€" fected by other drugs in various quantitiesâ€"for example, LSD, marihuana, _ alcohol, _ antihistaâ€" mines, anesthetics? How â€" are chronic largeâ€"dose users of amâ€" phetamines affected by these other drugs? Does chronic largeâ€"dose use, especially by needle, involve longâ€" term hazgards other than those listed above? peutic use? Does physical dependâ€" ence develop? If so, what is its extent and nature? * stall a catcher assembly, suitable warning instructions must be perâ€" ing stating that the mower must Handles of mowers must be atâ€" tached firmly to prevent loss of control by the operator by uninâ€" tentional uncoupling while in most important by CSA. Where power has been shut off, and the enflré»pot': nust"b .“'tl: wi shock of having “& a rigid metal bar while . Phe : must also QM ing flt-*u m?(wm See other photos on Page 6 ged 19,000 feet per minute. move bits of debries that might be hbidden in the grass. The CSA, Canada‘s national body for establishing voluntary standards, maintains tfifing labâ€" oratories in Vancouver, Winnipeg, Teronto and Montreal. More than 3,000 Canadians, reâ€" presenting industry, government, consumer and other groups, serve voluntary on more than 650 CSA standardsâ€"wiring committees. tite of common sense precautions while operating power mowers. Never place hands or feet near the cover assembly while the machine is in operation and alâ€" ways rake the lawn thoroughly "Cgution" or stronger wording must be placed on the mower near each discharge opening and nfie@yiutrucfiomnmtbcu» lied with each mower. . In addition to the safety pro vided by these requirements; the not used without: either the > gfiifiou@umm a 41 John West, Waterloo Phone 578â€"5530 FOLEY ANIMAL CLINIC Is there anything new under the sun? No! 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