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A PRACTITIONER RECOGNISES THE importance of regulation, but acknowledges the frustrations over inconsistency, the impact on the lives of residents and the need for a change in the approach.

The laws directed against adulteration and fraudulent or unfair dealing have undoubtedly done much good wherever they have been enforced. Their application in this and in other countries has shown how widespread are these practices and how various are their forms, while the punishment of real offenders, in the by no means large proportion of cases where it has been possible to bring forward sufficient proof of guilt, has certainly not been displeasing to the general public, and must have afforded particular satisfaction to those members of the trading community who have appreciated the injury done to them by unfair or actually dishonest competition.

BECAUSE productivity means profitability it is the aim of any manufacturing organization. Too often productivity is thought to be the same thing as increased production. In reality it is very different. The way to increase production is fairly obvious. More machinery is obtained, larger quantities of raw materials are purchased and more workers are engaged. If, for example, these three essentials are doubled production should be twice as much. Production has increased, but if it has not succeeded in lowering the price of whatever is being manufactured what has been gained?

ALL who have visited Liverpool for any length of time have affection for her. She lies alongside a noble river, watched over by the lofty Liver building and the perhaps more architecturally perfect offices of the Mersey Dock authorities. Even in these days, when the very largest ships have been diverted to Southampton, splendid vessels come from and go to the ends of the earth almost daily. The river is the essential fact about Liverpool; she was born of the river and her waterfront is one of the world's rendezvous. As a city she compares favourably with any English town, and perhaps excels most in her few splendid buildings, amongst which the new and rapidly growing Cathedral takes first rank.

There are various Sections of the new Food and Drugs ct which are not wholly easy to interpret. One of these Section 47, the side‐note of which is worded “misuse designation ‘cream’ in relation to cream substitutes”. ow does this Section alter the law relating to cakes, ins and biscuits sold under a description or designation cluding the word “cream”?

Food has always been an attractive field for the eccentric, the holder of extraordinary views on dietetics and nutrition, the “ back‐to‐nature ” types, whose ideas of what happens to food after it has passed the mouth must be even more fantastic than their knowledge of food values generally. These fanatics invade other spheres, of course. There is the “ fresh air fiend,” who cannot distinguish between fresh air and piercing draughts, with the result that he (or she) scalps everyone unfortunate enough to be travelling in the same railway carriage, but there seems nothing to touch the food faddist. His views attract an inordinate amount of publicity. Sometimes these are based entirely on misconceptions, but more often have orthodox premises, but have become confused and distorted in the person's own process of reasoning.

There are very few individuals who have studied the question of weights and measures who do not most strongly favour the decimal system. The disadvantages of the weights and measures at present in use in the United Kingdom are indeed manifold. At the very commencement of life the schoolboy is expected to commit to memory the conglomerate mass of facts and figures which he usually refers to as “Tables,” and in this way the greater part of twelve months is absorbed. And when he has so learned them, what is the result? Immediately he leaves school he forgets the whole of them, unless he happens to enter a business‐house in which some of them are still in use; and it ought to be plain that the case would be very different were all our weights and measures divided or multiplied decimally. Instead of wasting twelve months, the pupil would almost be taught to understand the decimal system in two or three lessons, and so simple is the explanation that he would never be likely to forget it. There is perhaps no more interesting, ingenious and useful example of the decimal system than that in use in France. There the standard of length is the metre, the standard of capacity the cubic decimetre or the litre, while one cubic centimetre of distilled water weighs exactly one gramme, the standard of weight. Thus the measures of length, capacity and weight are most closely and usefully related. In the present English system there is absolutely no relationship between these weights and measures. Frequently a weight or measure bearing the same name has a different value for different bodies. Take, for instance, the stone; for dead meat its value is 8 pounds, for live meat 14 pounds; and other instances will occur to anyone who happens to remember his “Tables.” How much simpler for the business man to reckon in multiples of ten for everything than in the present confusing jumble. Mental arithmetic in matters of buying and selling would become much easier, undoubtedly more accurate, and the possibility of petty fraud be far more remote, because even the most dense could rapidly calculate by using the decimal system.

THE IFLA Conference—or to be more precise—the 34th Session of the General Council of IFLA—met at Frankfurt am Main from the 18th to the 24th of August, 1968. Note the dates, for they include the 21st of August, the day when the delegates heard, as did the rest of the world, of the invasion of Czechoslovakia. Until then the Conference had been proceeding happily, and with the smoothness inborn of German organisation. During and after that date, a blight was cast over the proceedings, and although the Conference carried out its formal and informal programmes as planned, concentrations were disturbed as delegates sometimes gathered round transistor radios, their thoughts on Eastern Europe.

Very much more might be done to improve the quality of our food supplies by the great organisations that exist for the avowed object of furthering the interests of traders in foodstuffs. It is no exaggeration to say that these organisations claim, and rightly claim, to speak in the aggregate on behalf of great commercial interests involving the means of livelihood of thousands of people and the most profitable disposal of millions of money. The information that they possess as to certain trade methods and requirements is necessarily unique. Apart from the commercial knowledge they possess, these organisations have funds at their command which enable them to obtain the best professional opinions on any subjects connected with the trades they represent. Their members are frequently to be found occupying positions of responsibility as the elected representatives of their fellow‐citizens on municipal councils and other public bodies, where the administration of the Food Laws and prosecutions under the Food and Drugs Acts are often under discussion. Such organisations, then, are in a position to afford an unlimited amount of valuable help by assisting to put down fraud in connection with our food supply. The dosing of foods with harmful drugs is, of course, only a part of a very much larger subject. It is, however, typical. Assuming the danger to public health that arises from the treatment of foods with harmful preservatives, the continued use of such substances cannot but be in the long run as harmful to the best interests of the traders as it is actually dangerous to public health. The trade organisations to which reference has been made might very well extend their sphere of usefulness by making it their business to seriously consider this and similar questions in the interests of public health, as well as in their own best interests. It is surely not open to doubt that a great organisation, numbering hundreds, and perhaps thousands of members, has such a membership because individual traders find it to their interest, as do people in all walks of life, to act more or less in common for the general advantage ; and, further, that it would not be to the benefit of individual members that their connection with the organisation should terminate owing to their own wrong‐doing. The executives of such trade organisations hold a sufficiently strong position to enable them to bring strong pressure to bear on those who are acting in a way that is contrary to the interests of the public generally, and of honest traders in particular, by adulterating or misbranding the food products that they gain their living by selling. It should also be plain that such trade organisations could go a long way towards solving many of the very vexed questions that arise whenever food standards and limits, for example, form the subject of discussion. These problems are not easy to deal with. The difficulties in connection with them are many and great; but such problems, however difficult of solution, are still not insoluble, and an important step towards their solution would be taken if co‐operation between those who are acting in the interests of hygienic science and those who are acting in the interests of trade could be brought about. If this could be accomplished the unedifying spectacle of alleged trade interests and the demands of public health being brought, as is so often the case, into sharp conflict, would be less frequent, and there can be no doubt that general benefit would result.

The purpose of this paper is to provide an overview of the research in a project aimed at developing manufacturing techniques for integrated optical and electronic interconnect printed circuit boards (OPCB) including the motivation for this research, the progress, the achievements and the interactions between the partners.

Several polymer waveguide fabrication methods were developed including direct laser write, laser ablation and inkjet printing. Polymer formulations were developed to suit the fabrication methods. Computer‐aided design (CAD) tools were developed and waveguide layout design rules were established. The CAD tools were used to lay out a complex backplane interconnect pattern to meet practical demanding specifications for use in a system demonstrator.

Novel polymer formulations for polyacrylate enable faster writing times for laser direct write fabrication. Control of the fabrication parameters enables inkjet printing of polysiloxane waveguides. Several different laser systems can be used to form waveguide structures by ablation. Establishment of waveguide layout design rules from experimental measurements and modelling enables successful first time layout of complex interconnection patterns.

The complexity and length of the waveguides in a complex backplane interconnect, beyond that achieved in this paper, is limited by the bend loss and by the propagation loss partially caused by waveguide sidewall roughness, so further research in these areas would be beneficial to give a wider range of applicability.

The paper gives an overview of advances in polymer formulation, fabrication methods and CAD tools, for manufacturing of complex hybrid‐integrated OPCBs.