Summary. The mode of occurrence of uraninite, pitchblende and coffinite at five localities in south-west England is described. Chemical and isotopic analyses of concentrates containing these minerals provide the following 2~ages (

I. Pre-Eocene Formations A description of the Tertiary and post-Tertiary deposits surrounding the Dardanelles can hardly be made clear without some reference to the older rocks upon which they rest, but our knowledge of the conditions under which the pre-Eocene strata in Thrace and Anatolia were deposited and broken up is as yet very limited. The pre-Eocene sedimentary formations are, as a rule, so highly metamorphosed that no fossils are visible; and they are so much dislocated that the general appearance is that of an archipelago of old rocks in the Eocene Sea. A succession of mica- and hornblende-schists, crystalline limestones, and marble, with, occasional gneiss or granite and serpentine, upon which the Tertiary deposits rest unconformably, can be traced from Olympus and Athos, along the Thracian coast, including the island of Thasos, into the Sea of Marmora. The Eocene shore-lines and fringing coral-reefs can be identified in some instances, but an inspection of the map (Pl. XXI) will show the probable islands of the pre-Eocene archipelago more clearly than any description. I shall, therefore, only refer to a few localities hitherto unnoticed, or where some correction to previous accounts appears to be necessary. At Tenedos Island I found the south-eastern face for about 2 miles in length, from Cape Marmora to Oinos Point, to be formed of white marble. Along the southern shore of the Sea of Marmora, a stretch of about 35 miles, from Boz Burnu to Kara Burnu, and thence halfway up the Gulf of Artaki, shows,

A survey was conducted to explore the degree to which practicing psychologists are involved in exercise programs, the patterns of exercise favored, and the degree of effect attributed to exercise on various dimensions of psychotherapy practice. Survey instruments were mailed to 262 psychologists listed in the National Register of Health Service Providers; 196 (74.81 %) responded. Most of the respondents (71.43%) reported engaging in regular exercise. Chi-square analyses revealed that patterns of exercise were related to demographic factors. Dimensions of psychotherapy perceived as most positively affected by exercise were the physical stamina, mood, and mental stamina of the therapist. Analyses of variance revealed that demographic and exercise pattern variables were related to perceptions of exercise effect on some of the dimensions of psychotherapy. Most respondents reported that they would recommend regular exercise both to other therapists and to patients.

PETROLEU~I-DEPOSrrs IN EUROPEAN TURKEY. 151 These are included in a tract of country about 24 miles wide in a north-and-south direction, bounded on the west by the alluvial valley of the River Maritza, and on the south by the northern shore of the Gulf of Xeros; and in a littoral strip about 4 miles wide ,skirting the northern coast of the Sea of Marmora for about 32 miles, from abreast the head of the Gulf of Xeros to GanGs, opposite the western end of Marmora Island. Hochstetler remarks (olo. tit. p. 387) that ' this much, at any rate, can safely be derived from Viquesnel's account, that the core of this coastal chain of mountains is formed of old crystalline rocks (Viquesnel indeed generally mentions " terrain de transition ") and chiefly of rocks of the "phyllite-zone" which are enveloped and overlain by Eocene ~'ummulitie limestones and sandstones, and by late Tertiary sandstones, limestones, clays, and marls.' His map accordingly shows a large extent of 'pro-zoic' clayslate (phyllite)which, so far as I can ascertain, has no existence, the area being occupied by Eocene strata and conr~emporaneous or younger volcanic rocks. It is true that Viquesnel often suggests 9 terrains de transition.' but always with considerable reserve, and Vicomte d'Archiac, at the commencement of the description of fossils (' Voyage dans la Turquie d'Europe ' vol. ii, 1868, p. 450) says :-' We have not foun~, in the collection made b~ Viquesnel of Ibssils from Thrace, a single specimen belonging to transitional or even to old Secondary faunas. The only ones that denote the existence of late Second,try rocks are very few in number and come from two different localities.' The lowest beds that I have seen are thinly-bedded hard blue coralline and softer brown N ummulitic limestones of Lutetian age. These crop out at the village of Vernitza (about 9 miles northeast of Ibridji on the Gulf of Xeros), where they show a northwesterly dip of about 15 ~ and are overlain conformably by blue shales. The junction-beds are one mass of nummulites, closely allied to-hrummulites com2)lanata and 2r biarritzensi.% of all sizes up to 2 inches in diameter, weathering into a gravel entirely composed of these fossils. The outcrops of Eocene strata apparently form a belt stretching in an easterly-and-westerly direction for about 40 miles, as Viquesnel notes similar fossils at Margarice, 3 miles south of Vernitza; and Vicomte d'Arehiae identifies .Nummulites t~amondi and Orbitoides submedia in yellowish compact limestone, subcrystalline, with splintery fracture, from Bournar Oren near Examil, on the isthmus between the Gulf of Xeros and the Sea of Marmora2 :He also notes Nummulites biarritzensis and ~Y. t~amondi in brownish-grey limestone from Mount Seriau, 2 leagues northeast of Kayak, and again N. Rctmondi in yellowish-grey compact limestone with waxy fracture from Mount St. Elias, near Sterna.: At the last-named locality, the conical summit of the mountain, :2300 feet above the sea, is a mass of coarse marble dipping 20 ~ southeastward, with seams of cal...