NOTES AND QULRIES.

Otago Witness, Issue 3102, 27 August 1913, Page 47

NOTES AND QULRIES.

Question* for reply In coming Issue to b* r*oelTod not liter than SATURDAY night. Bush Boy. — A 16ft by 3ft 6in flatty could be driven by a h.p. Evenrode motor at about six miles per hour. This particular type of motor can be attached to or detached from a flatty- in about two minutes. You will be able to obtain a motor of this type at W. J. P. M‘Culloch’s, Dunedin. Doubtful.— The electric bell at the Rattray street railway crossing, Dunedin, does not work automatically, but is set ringing by the signalman pressing a button when lie receives woi-d of an approaching train. It is understood the Railway Department lias under consideration a New Zealand invention for uso at both town and countrylevel crossings. It is composed of hurdles whidh will be lowered automatically on each side of the line until a train passes. In all probability an electric bell will bo rung at the same time. A. H.—(l) Front doors of residences are usually painted first and then varnished, but frequently they are grained. (2) A wallaby may have more than one young at a time. It is understood that they breed only once in a year. (3) Why not grow something to cover the stump, and make it a pleasure to look at, instead of an eyesore. It may be got rid of in time by boring a hole about lOin deep and from to 2in in diameter. Put into this hole Igoz of salt-petre, fill up with water, and plug tightly. Leave untouched until next autumn or spring, when the plug may he removed. Pour about a glassful of kerosene into the hole and apply a light, when the stump will smoulder away completely. Constant Rf.ader. — Ro constipation in dog. See answer in Kennel Column. N. M.—lf you communicated with the Minister for Justice and lie considered the circumstances warranted the person being discharged from the institution it is jxissiblo She might be able to do something. Plough Boy wants to know how to tell the difference between male and female starling birds.——The female is lees brilliant than the male, and has the terminal spot in the feathers much larger. Anxious. — (1) The Salvation Army has a Rescue Home in Lindsay road, (,'aversham, and a Girls' Home at Middlemarch. (2) To obtain a copy of a birth certificate from Scotland you will have to forward a fee of 3s 2d. A., Milton. —To induce your walnut tree to fruit, dig a trench round the tree some sft or so from the trunk, cutting through all the main roots, also undermine and cut the tup roots. This root-pruning will check exuberant growth and induce fruitfulness. Butehan. —See Horticultural Notes re gumming of apricot. INQUIRER, Kuri Bush. —(1) No, not on account of being raised from the stone, but an almond tree will not boar fruit in your district, climate not suitable. (2) Dry soil. (5) Sunny exposure, but sheltered from cold winds. ]r il. —Some time in November, probably alrout the 13th. Mr Frank Adeane, 215 Queen street, Auckland. q ak . Presuming you desire to stain an oak picture frame, vou should have mentioned what colour you desire. Fuming with ammonia is as good a plan as any, but, failing this, make a red oil by steeping 2oz of alkanct root in half a pint of raw linseed oil and wipe over the wood with this Next rub in a solution of bichromate of potash ioz in i-pint of water, finishing off in the direction of the gram, it will be necessary to repeat the operation two or throe tint os for h. <T«irlw shaoe. E. F. The Y.M.C.A. charge youths under 20 years of age 13s, 14s, and 15s per week, according to ago. for board and residence in the Boys’ Home. York place. In the main building in Moray place the charge is from 20s to 2os. according to situation. As a general rule, no one under 20 years of ago is taken in at the Moray place institution. Inquirer. —lf you send a specimen of each "tale, it will be possible to determina

which is the Senator and which Delicious. Number each apple and keep a record. Constant Reader. —Apples, peaches, and "apricots could bo grafted on plum stocks and apples could be grafted on to hawthorn stock, but the result would probably bo highly unsatisfactory. The best results are obtained from grafting the apple on apple stock, pears on pear stock, peaches on peach stock, apricots on apricot or plum stock, and plums on plum stock. Perplexed wants to know if any anyone can refer him to an authority on the rules of the game 500. A few are printed on the back of the - scoring card, but they are very incomplete, and leave quite a lot of items that come up for discussion during a game unsatisfactorily explained. Crib writes: “If I hold four 2’s and a S is cut up, what can I count in hand?” Fifteen 6, and a double pair royal, 12; — total, 18. Constant Reader. —Sir Joseph Ward is a baronet, and the eldest son succeeds to the title; but it is to be hoped not for many years yet. Novice. —From the particulars you give it seems probable that the fruit trees wore suffering from crown gall, a disease said to be infectious. Duffer. — (l) Keep on chopping down and digging up the elderberry as it makes headway. That is the only method of getting rid of it. The plant becomes less vigorous after every mutilation, and will eventually die out. (2) Evidently the crochet books you refer to have only been published. As you are able to give the name and address of the publisher, any bookseller will order a copy for you. Territorial. —(li The department understands that all members of the rearguard were paid in camp. If you were overlooked you should make your claim through your company commander. (2) If you are fined for non-attendance at parades, the department may retain moneys due to you to cover the amount of the fines. C. E.; Timtapere.—Mr H. M. Davey, consulting engineer, replies: I have never known an engineer who had not rather drive some other way, such, for instance, as a skew belt or the like; but still this form of gearing does its work well, and in many cases it practically must be used. Now that cut .gearing is so much used, the objection to this gear is considerably lessened, and were it not for the thrust on the bearings it might even not be considered objectionable. Of course, you give no possible indication of what speed you desire to drive at, for what one would ball high speed another perhaps might not. •! wish you had indicated a little as to ( tho power you wish to transmit, the size and pitch of the wheels, and the speed, etc. As it is, the reply is not as clear as it might be, though it is as correct as could be given to the question as you have put it, I think. The above is an opinion as to whether it is satisfactory. \ou ask if it is practicable. Yes, it is, and it is usee! for all sizes of wheels. See that the teeth arc properly cut and that you have a good area for the thrust, unless you are able (as is sometimes the case) to get an end centre like that used generally in small lathes to one or both shafts. Spbinghills— Mr H. M. Davey, consulting engineer, Princes street, replies:—“We have a little more to go on. Suppose, as before stated, that your saw takes 7 h.p. and your fall is, as you say, 46ft, which points to a Felton wheel as the best motor for you under the conditions as you explain them, that machine .if in good order and with an efficient supply in an ample supply tube should give you 1 h.p. for about each lift, or, say, 4 h.p. for one Government head for your fall. You will therefore require to use nearly two heads, which will moan two cubic feet per second, or about 7200 cubic feet per hour, or, say, 57,600 cubic feet per eight houts. This would be about 2112 cubic yards as the size of the reservoir fgr eight hours’ supply. (Seeing that there are days perhaps when you may not work the eight hours, it might be as well to increase this size if possible, but you can judge that.) Now, the above would seem to need a circular reservoir about 124 ft in diameter by about sft deep. Finally, for two heads of water you need a lOiu pipe-line, or even llin would be better, with a good long taper inlet.” .R. M. T. 1,. W., Remvicktown, Marlborough.—Mr M. M. Davey replies;—“ln your case 1 consulted Mr Jones, electrician in the firm of Messrs Turnbull and Jones, who very kindly replied as follows; ‘ You appear to have a windmill drive, and appear to already have a device for cutting tile speed out at about 2200. Practically you want thus to he about half, and so one way would be to so alter the strength and number of the springs as to do tin's. They have already done this successfully. Another way that would seem from your sketches to do would bo to so alter the relative sizes of the jiulleys to the dynamo that the result is attained. You might ivrhaps do a little of both these, for if you failed to get sufficient alteration of speed by the first plan the other would give it to you. If, however, your plan is misunderstood, please write again on the subject, saying where wo have gone wrong. Since writing the above I nave thought of a. possible way of getting (ho motion you want without the pulleys over getting out of gear. I have not seen them working exactly as I shall try and describe, but I have seen sufficiently near to believe that it would work that way. Suppose the wheel that moves the shaft had an edge like a pulley designed for a belt—that is. square-edge, not bevelled, — and that it worked on the face of the ono from the windmill in such a manner that when it was drawn back by the centrifugal force of the weights it slid nearer the centre, but still was engaged to the face of the wheel from the mill. If you remember the sketch you sent of the whole gearing, well, if the wheel that elides, instead of working to the right-hand side of the ono from the mill was extended to work under the left-hand side of the face, it would bo nearer the centre when withdrawn, and so go slower, and the reverse when the mill slackened. I have seen a drilling machine on this principle, ancj although itviid not work automatically I think it might be made to do so. Do you understand this? ”