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It must be remembered that the exercise described in part 1 was carried out in a carbon arc weathering machine to provide a stable environment. Referring to Fig 7, which shows the absorption spectra of the resins used in this section, it can be seen that the acrylic resin only absorbs to any great extent in the UVB region, and if reference is made to Fig 3, where the spectra of carbon arc radiation and UK summer sunlight are compared, it is seen that the carbon arc is deficient in this area. The protective aspect of titanium dioxide will thus not operate in this weathering environment. If the same exercise was repeated in natural sunlight, then the pigmented paints would show an even greater protective tendency, since all resins absorb to a greater extent as wavelength decreases, but the extent of photocatalysis remains constant. In Fig 7, the two alkyd/MF systems have been represented by a single line because of their chemical similarity.

A review of the common photodegradation processes in polymeric coatings is presented, and the photoactivity of titanium dioxide and its consequences are discussed. Experimental work which explores the durability implications of the use of titanium dioxide in coatings is presented. This includes the effects of pigment flocculation, film thickness and photostability of the pigment. The importance of the correct selection of light source for accelerated weathering is stressed. Finally, results are presented from a recent study of the influence of geographical location on the weathering of titanium dioxide pigmented paint films.

At a recent inquest upon the body of a woman who was alleged to have died as the result of taking certain drugs for an improper purpose, one of the witnesses described himself as “an analyst and manufacturing chemist,” but when asked by the coroner what qualifications he had, he replied : “I have no qualifications whatever. What I know I learned from my father, who was a well‐known ‘F.C.S.’” Comment on the “F.C.S.” is needless.

The milk supply of our country, in one form or another, has been the subject of discussion year after year at Congress meetings. Its importance is an admitted fact, but, notwithstanding, I again venture to call attention to the matter. On this occasion, however, I do not propose to touch much of the ground already covered by former papers, but to consider the results of experiments and observations made while dealing with milk supply under the Sale of Food and Drugs Acts. For many years dairy regulations have been in force throughout the country which deal with the construction of floors and walls, and with lighting and ventilation. The owners of dairy farms in many parts of Scotland have spent large sums of money in improving their farms. Indeed, some enthusiasts have gone the length of introducing a system of heating and mechanical means of ventilation. It is only reasonable to pause and consider the practical results of these improvements, and to discover who are reaping the benefits from a milk supply standpoint. Do the owners of dairy farms receive anything like a fair return for their capital outlay? No. It is a well‐known fact that rents are on the down grade. Is the farmer of to‐day in a better financial position than formerly? No. He will tell you that the working of a “modern dairy” is more expensive than in the old steading, and that there is less flow of milk from the cows in the large airy byre than in the small old “biggin.” The price of milk is considerably less than it was fifteen or twenty years ago. At that time it ranged from 10d. to 1s. per gallon, and it is well known to you that hundreds of gallons of milk are now sent into our large cities for at least a distance of 100 miles, carriage paid, at 7½d. per gallon. In some cases the price is 9d. per gallon during the winter and 7½d. in summer. A farmer I know has a contract with a dairyman to supply him with 20 gallons of sweet milk, 16 gallons of skim milk, and 4 gallons of cream every day at an average rate of 7½d. per gallon all the year round. I have proved, by having test samples taken of the sweet milk, that it contains an average fat of 4.89 per cent. in 16 gallons. Neither the owner nor occupier of the farm can be any better off so long as such small prices prevail. Does the profit then come to the consumer? It does not.

We have before us the recently‐issued Annual Report of the Local Government Board on the work done by the Local Authorities under the Sale of Food and Drugs Acts. While preserving the general form and arrangement of its predecessors, it shows that not only the Board itself, but the local authorities also, are coming to an increasing realisation of the importance of the subject. Six years ago we had occasion to point out some of the defects attaching to these reports, and to suggest various improvements that might be made in them. We felt, and expressed at the time our belief, that the Board was much handicapped by the form of quarterly reports imposed on the Public Analyst by the Food and Drugs Acts, and by the non‐existence of any machinery by which it could get together and collate the vast amount of information which those reports ought to, but do not, yield. Until the law is altered the present system must continue, but it is striking evidence of the lack of serious study spent on the matter that for want of effective coordination and control more than one‐half of what may be considered the real and permanent value of the Public Analyst's work goes into the waste‐paper basket. The work done by most Public Analysts as individuals is limited to some few hundreds of samples of any one article of food, but the combined expeperience of them all would in most cases — assuming it could be accurately ascertained—go far towards settling in a single year many of the thorny questions relative to standards and limits which are fought out at such great length and still greater cost to the community in the courts of law.

In this contribution, the solution of Mass-Spring-Damper Systems in the fractional context by using Caputo derivative and Orthogonal Collocation Method is investigated. For this purpose, different case studies considering constant and periodic sources are evaluated. The dimensional consistency of the model is guaranteed by introducing an auxiliary parameter. The obtained results are compared with those found by using both the analytical solution and the predictor-corrector method of Adams–Bashforth–Moulton type. The influence of the fractional order on the mechanical system is evaluated.

In the present contribution, an extension of the Orthogonal Collocation Method to solve fractional differential equations is proposed.

In general, the proposed methodology was able to solve a classical mechanical engineering problem with different characteristics.

The development of a new numerical method to solve fractional differential equations is the major contribution.

In Table IV. are given the averages of the three samples of each cow's milk given morning and evening. The average fat for the three samples of the milk of cow A is 3.92; cow B, 3.26; and cow C, 3.24, and if these were all mixed together the average fat would be 3.45 for the morning milk. The average fat of the three samples taken from the cows A, B, and C in the afternoon is—A, 5.08; B, 3.08; and C, 3.54; and the average of the three milks is 3.85. In the same table are shown the first two samples of each cow's milk mixed together both morning and evening. By referring to Tables II. and III. under cow A it will be seen that the milk fat of the first and second samples is 2.30 and 3.67, and these added together are shown on Table IV. under cow A, and similarly with cow B and cow C night and morning. It will also be seen that the milk fat in the morning milk of cow A is 3.21; cow B, 2.49; and cow C, 2.15, and if these were mixed together the average fat would be 2.61. The average fat of two samples of milk taken from cow A in the afternoon is 4.50; cow B, 2.67; cow C, 2.12, and if mixed together the average fat is 3.08. It is interesting to note that if cow B was milked for six minutes in the morning, and the milk sold, the sample would be .51 deficient in fat, and the dairyman could honestly say that the milk was sold as it came from the cow. There is also a deficiency in the fat of the milk of cow C in the morning, and cows B and C in the afternoon.

Applications for clinical psychology training far outstrip places and relevant work experience is key. Paid opportunities are limited and therefore many choose volunteering, with well-connected graduates faring best. To promote equal opportunities a coordinated psychology graduate voluntary internship programme was established in a National Health Service Trust in the South of England. The purpose of this paper is to evaluate intern and supervisor outcomes, equality of access and adherence to governance standards.

Three cohorts of interns, unappointed applicants and supervisors were surveyed. Between 2013 and 2016, 270 psychology graduates applied, 119 were recruited and 151 either refused a place or were unsuccessful. In total, 91 supervisors provided service-level feedback.

Interns and applicants were predominantly young, able-bodied white British heterosexual females. Demographic profiles were similar and broadly representative of psychology graduates nationally. While fewer were from Black and Ethnic Minority backgrounds, proportions were greater than the local population. Participants were more socioeconomically privileged than undergraduates nationally. The scheme was popular and well governed according to interns and supervisors. Post-internship employment prospects were improved, with most interns gaining paid mental health roles like assistant psychologist. Most supervisors commented on the positive contribution made by interns to service outcomes.

This study makes a significant contribution to the literature on voluntary psychology graduate posts, an area under-researched until now. Our results suggest that a coordinated, transparent approach can benefit both interns and services by minimising exploitation and maximising developmental opportunities for the new graduate. The programme makes an important contribution to addressing inequalities experienced by psychology graduates attempting to enter mental health careers.

Regression discontinuity designs have become popular in empirical studies due to their attractive properties for estimating causal effects under transparent assumptions. Nonetheless, most popular procedures assume i.i.d. data, which is unreasonable in many common applications. To fill this gap, we derive the properties of traditional local polynomial estimators in a fixed- G setting that allows for cluster dependence in the error term. Simulation results demonstrate that accounting for clustering in the data while selecting bandwidths may lead to lower MSE while maintaining proper coverage. We then apply our cluster-robust procedure to an application examining the impact of Low-Income Housing Tax Credits on neighborhood characteristics and low-income housing supply.