Dyeing IV.-Testing and Valuation of Dyestuffs. Testing colors as to permanence against the action of light, scouring and fulling. Determination of commercial value of dyewares, mordants, bleaching agents, scouring agents, etc.-Purification of spent liquors and recovery of waste products.-Detection of dyestuffs on fibers and otherwise.-Detection of the different fibers in mixed goods.

EVENING CLASSES.

In order to allow dyers and others employed during the day to receive some of the benefits and profit by the facilities for study which this school may afford, courses in chemistry and dyeing have been arranged to be carried on in the evening. An attempt is made to bring the lectures and laboratory work down to the every-day needs of the practical dyer, and they are more in the form of familiar talks on the subjects in which he is interested than abstruse scientific lectures. The courses are planned with the view of affording the practical man an opportunity of gaining an elementary scientific education, making him acquainted with up-to-date ideas and methods, and enlarging the sphere of his usefulness by extending the knowledge of his art. The courses extend over a period of three years, during which time instruction is given in a practical way in elementary, intermediate and advanced dyeing. Elementary chemistry is taught by means of lectures and laboratory work, and the student is given an idea of the chemical workings of the processes he is daily carrying into operation.

The courses in dyeing are modelled on those given to the day students; the limited time, however, at the disposal of the evening classes will not permit, of course, of such elaboration either in the lectures or experiments, but practically the same ground will be covered in wool and cotton dyeing.

Besides the general course in elementary chemistry, there is also offered one in more advanced chemistry, open to students who give satisfactory evidence of having already attained sufficient ground work in general chemical knowledge to be able to pursue such studies with profit and understanding. This course is one in technical analysis, and the character of the subjects taken up has a direct bearing on the needs of the individual student, who is given the opportunity to devote his attention almost exclusively to that line of chemical investigation in which he is personally interested. After a brief course in the fundamental and essential principles of qualitative and quantitative analysis in general, the student proceeds to his specialized subject, and enters into the investigation and analysis of particular chemical products under the personal supervision and direction of the teacher. A well-equipped laboratory, with all the necessary analytical apparatus and reagents, affords the student every opportunity for accurate and scientific work. The course is designed for the purpose of extending to those employed in the various trades an opportunity of advancing both themselves and their profession by becoming acquainted with the special chemistry of their subject. An endeavor is made to give such persons both the knowledge and the ability necessary to analyze the raw materials and products of manufacture involved in their separate industries.

FEES AND DEPOSITS.

The tuition fee for the Day Course in Chemistry and Dyeing is $150.00 per school year of thirty-six weeks. All students taking this course are charged a laboratory fee of $5.00, and in addition are required to deposit $15.00 to cover breakage of chemical apparatus or other damage to school property. After deducting the sum chargeable to the above accounts the balance is returned at the close of the school year. Students of the day school also make a deposit of $2.00 for a locker key,

of which amount, 50 cents is refunded upon the return of the key, the balance being retained as rental for the use of the locker. Keys will not be redeemed unless presented within thirty days after the close of the school year.

The tuition fee for the Evening Course in Elementary Chemistry or in Dyeing is $15.00 for the term of twenty-five weeks. In addition to this each student in the Chemical Course is required to make a deposit of $10.00, and each student in the Dyeing Course $5.00, to cover breakage of chemical apparatus and laboratory charges. After deducting these amounts the balance is returned at the end of the school year.

The tuition fee for the Evening Course in Technical Chemistry is $25.00, and each student is required to deposit $10.00 to cover breakage of chemical apparatus and laboratory charges. After deducting these amounts the balance is returned at the end of the school year.

All students of the Evening School make a deposit of $1.00 when they are supplied with a locker. Fifty cents of this amount is refunded, provided the key is returned within thirty days after the close of the school year.

Lowell Textile School.

Within a few weeks the Lowell Textile School will occupy Southwick Hall, the first of a series of new buildings, now under process of construction.

This new building, which is illustrated by accompanying cut, is beautifully located on the banks of the Merrimack. but a short distance below the famous Pawtucket Falls.

The work of the whole school will be much improved and broadened upon the occupation of these new buildings, but in no department will the change be more marked and the work facilitated to a greater extent than in that of Chemistry and Dyeing. Modern machinery for illustrating the various processes of textile coloring on the practical scale will be introduced, and every effort will be made to keep the appointments and equipment of the laboratories as well as the courses of study, of a thoroughness and grade second to none in the world.