. stems | ‘New method to find cancer-causing agents Can you believe that a task which once cost up to $150,000 can be done for as jittle as $100 and the result be just as dependable? It is true and in the midst of the fight to control inflation, this happens to be good news in the fight to control cancer. ‘There's a growing amount ‘of evidence that some people are more sensitive to: ‘certain carcinogens in the environment than others; and that some areas show a higher concentration of certain carcinogens than others. If these two groups -- the people and the areas — can be identified, the subsequent increase in the number of human cancers that can be prevented would free additional much needed funds for the treatment of those that cannot. © This is the basis for an ongoing world-wide research program in which a team-~ of Vancouver scientists headed by Dr. Hans Stich is playing a prominent part. Wor' ing out of the Cancer Researc’ Centre at the University of British Columbia, where Dr. Stich is a member of the department of medical genetics, the team is m a valuable con- tribution to the search for a cure for cancer. Dr. Stich has devised a method for short term testing for chemical car- cinogens, which is evaluating potentially dangerous compounds and P _pro and containing them faster than was possible before. This method, using laboratory cultures of human body cells instead of the traditional rats or mice, has led to a fundamental change in attitude toward the problem. Says Dr. Stich: “Only five years ago, the feeling existed that it whs impossible to analysis of the vast number of naturally-occurring or man-made .. compounds found in man’s - en- vironment, “This defeatist attitude is not surprising, considering that the classical rodent tests for carcinogens needed about 200 mice or rats, took between two and three years to complete and -cost anywhere between $100,000 inpointin ‘problem areas - cope with and $150,000 — just to test one compound. Now a short term test can be completed within a few days, hundreds of tests can be run simultaneously and the cost is between $100 and $500 per compound.” The battery of short term. tests designed by Dr. Stich and his team are powerful tools with which to detect cancer-causing chemicals in man’s environment and within man himself. Human cells cultured in the laboratory appear to be the most promising test sub- jects which should provide ighly. relevant results. Cells from normal, non- afflicted people can be tested in conjunction with cells from people or whole families. with varying cancer risks, to evaluate the hazards of exposure to carcinogens in the en- vironment and to car- cinogens formed within man. This project is one of many funded by the National Cancer Institute of Canada, from the annual April campaign of the Canadian Cancer. Society. Several people have asked the following question: What makes leaves change colour in the fall? We hear an odd assort- ment of replies to - this question — ‘‘cool weather”, “cold nights”, “chemical in the frost’. Most of these answers are not really correct, The explanation is somewhat more complex and will perhaps be un- derstood more easily if we first look briefly at what goes on in the leaves of trees at different times of the year. For most people, the first colour that comes to mind in. connection with trees is “green”, This colouring comes from the important... reen pigment, strong chlorophyll that is contained in the leaves, and for the moment, let us think of the leaves as thousands of tiny factories that manufacture food for the tree. During the spring and summer, these leafy fac- tories are in active operation. Water and ssolved minerals from the soil are taken in by the roots and drawn’ up the trunk to the foliage. Here, light from the sun is used as energy for a process made possible by . the reen pigment chlorophyll. Through the properties of this mysterious substance, hydrogen part of the water is combined with carbon dioxide from the air to produce sugar's that nourish the tree. These sugars are fed through miniscule pipelines in the leaf ster down and out to the bran: ches, twigs and_ roots. enabling the tree to live and grow. . Each year as the cold season approaches, the food-making factories repare to close. hiorophyll breaks down and the pipelines in the leaf gradually seal off, eventually causing th: leaves to rop — the tree is “battening down the - hat- ches” for the winter and we begin to see a different - landscape, AN... IMPORTANT ANNOUNCEMENT FROM WEIGHT WATCHERS. TF YOU ACT NOW YOU WILL . SAVEMONEY WHILE YOU LEARN TO V.O8E WEIGHT, Ay ot Map 1. 197%, the segistration fee willincrease $F. and the wethly meeting fee will mncrease $04 for WEIGHT WATCHERS classes in ihe Province of British Columbya, Bus there jb something you ¢an do about vt. Just egister and start coming (0 cian pefore May Ist, and you ean continue [0 enjoy aur present low rales — for as long Ay you continus coming to wlaaal (If you drap out, rate increase wifl apply if you drelde to re-a¢glsttr-) ‘ We put off the increase Bo {ong as we could, You ean put tt off forever. fy Joining us now! Knox United Church 4907 Lazelle Tues. 7:00 p.m. Senior clticen rater wall nor be increcued, ' . . Phone g2a-a4a1 =, WEIGHT aigtions warcrens oy eRe Urs Syd gies Uae They have not been yisible, but all this time there have been a number of other pigments besides chlorophyll in the leaf cells. One group is a pale orange known as the carotenes (carrots have lots of this pigment; hence their name). Another group is a purer yellow, called the xanthophylls. We have not seen these hues during the spring and summer. Being weaker, they have been masked by the intense green of chlorophyll. But now, as the green pigment deteriorates, they are no longer concealed and can give us the beautiful golds and yellows of the fall» ' in August next year, start a countryside, " ee yl y The reds and purplish: reds come from yet another group of pigments that are manufactured in certain - trees such as vine maple, _ beech, dogwood and others — the anthocyanins, These too have been masked and now appear as chlorophylis break down. Straume Avenue. Corporation of - Rupert. 25th, 1977 at 7:00 p.m. the . The District of Terrace Notice is hereby given that a Public Hearing will be held on proposed Land Use Contract Modification By-law Project No. ADP-02-7708. The proposed Land Use Contract Modification is concerned with the following area: - Folio 02511.000, Block 33 (except the part subdivided by Plan 6486), District Lot 362, Range §, Coast District, Plan 967 and the west half of Block 34, District Lot 362, Range 5, Coast District, Plan 947, Street Address 3629 Eby Street and 4830 & 4836 The general intent of the proposed Land Use Contract Modification By-law is to modify Land Use Contract No. 67205 between the District of Terrace and the Roman Catholic Episcopal Prince “(a)extend the date of completion for con- struction of all items listed on Schedule “L” - to September 30th, 1977; (b) add to Schedule ‘‘L” the requirement that _ all works aot constructed by Sepfember 30th, 1977 shall be completed by the District of Terrace at the sole expense of the Roman Catholic Episcopal Corporation of Prince The proposed Land Use Contract Modification By-law may be viewed by any and all persons requiring more specific information, during regular business hours at the Municipal Hall: The Public Hearing shall be held in the Municipal Council Chambers on Monday, April Any and ail persons having an interest in the, proposed Land Use Contract Modification By- | law Project No. ADP-02-7708 shall take notice. and be governed accordingly. . G.W. Buchanan Clerk-Adminisirator DISTRICT OF TERRACE | KE FOREST But why does brilliance of fall colours vary from year to year? Here, we find that the popular answer about ‘‘cold nights” has a germ of truth. Weather does play a certain role in the creation of nature’s pallette. For in- stance, the best conditions for development of the red anthocyanins occur when the weather is: bright and clear and when tem- peratures are cool, but not eezing, If follows that when we have a bright, brisk autumn season, the landscape is full of strong reds. you might enjoy. Beginning diary. Record the tem- rature, hours of sunlight, umidity and wind each day (get from local newspaper or radio reports). At the same time note the colours . of the trees around you and © when their leaves fall. You will make interesting discoveries about different trees. Rupert —to: the May we areas a project 0 THE HERALD, Wednesday, April 20, 1977, PAGE AS Meat supplies larger Beef and pork supplies have been running ahead of a year ago during the early weeks of 1977. Increased output has meant lower retail prices compared to 1976. Pork supplies have ac- tually been higher than most observers predicted. To * mid-March hog slaughter in Canada was 15 percent ahead of a year ago, but was still well below levels of just a few years ago, With processors com- peting for a larger available rk Supply, prices have not n bid as high in order to move all offerings ‘into consumption. Within a competitive system a me balance point between YOUNG HELPER — Ten-year-old Terry Ann Dickson searches out the best daffodils for an important occasion — the kick-off of the Canadian Cancer Society’s April campaign. Daffodils will be sold in Vancouver shopping malls by hundreds of Cancer Society volunteers April 15 and 16. Terry Ann, a successfully treated cancer patient, is one of the Society's youngest volunteers. | | — ry =a The Queen of Prince Rupert is a great way to go south whether your destination is Vancouver, the Island, or points beyond. . . Consider the convenience. You make your reservation and . drive on board: You can relax and enjoy fine meals, comfortable lounges, spotless staterooms. An added bonus is the magnificent scenery and calm waters . of the lovely Inside Passage. ‘Twenty hours later you'll drive off refreshed. Treat yourself. Driving? We'll “drive” you 330 miles. Busing? Your nearest terminal can provide information on services at both ends. - Moving? Your van operator knows this is the way. Arrive when he does. . ; The Queen of Prince Rupert is still one of North America’s great travel buys. For more information about sailing between Prince Rupert and Kelsey Bay on Vancouver Island, call 624-9627 in Prince Rupert or see your travel agent. — 4 supply and demand is reached at a point called price. To illustrate the current level of pork prices it can be noted that in February 76 the Consumer Price Index for pork stood at 217.5 (1971 equals 100), The index was 193.2 in the same month this year. What will happen in the coming months? As usual, the prediction is difficult, however, it is perhaps safe to assume Canadian sup plies will continue above a year age for some months. With U.S, supplies likely to continue larger and since the trend of _American prices has a distinct bearing on our price trends, it might be expected our retail pork prices will be under pressure relative to a year ago. At the beef counter sup plies have continued to be arge. Supplies through mid- March were U & percent and prices con under pressure, but extremely attractive from the con- sumer viewpoint. As there is still reason to believe beef supplies will decline as e Wenn progresses, prov ded moisture is received and grazing conditions are adequate (particularly in. the west), then it follows that cattle prices and hence beef prices are likely to rise, basis supply-demand func- tions, With high cattle slaughter for the past two years output appears to be moving: into an improved balance with consumer demand and hopefully producers will soon move out of the cost- returns squeeze of recent years. With warm, balmy. days, now again upon us, tho turn to steaks and r- becues, Just as sure as we'll have another cook-out season, then demand for e and steak. steaks will su prices will likely move up. It’s the natural pricing reaction that rations the available supply to the in- creased consumer demand. hts ret i me ee ee a a a nn ee ee Pee ee en