forth was known to be faulty for the removal of the gases, etc., from the machines or devices, were clearly pointed out in a letter accompanying the returned prints sent to the contractor or proprietor when the plans were disapproved. Following this procedure, it became an easy matter to make the necessary corrections, refile plans, and obtain a speedy approval by the Division of Industrial Hygiene and proceed with the installation.

Where intricate problems were presented, conferences were often held in the factory where the installation was to be made, or at the department's sub-office, with proprietors, contractors, or engineers jointly present with the Division's representatives, whereby specific or special problems were dealt with at length, and in all cases solved to the complete satisfaction of all concerned.

The interchange of knowledge between the Division's members, which was gained by the solution of any problem presenting difficulty, took place at conferences periodically held at the suboffice, and resulted in the dissemination of information relating to problems of ventilating and illuminating engineering, which became the common possession of all. Such information could be readily applied by any member, should similar cases again arise in the approval of ventilating systems.

Plan examination thus handled, wherein the difficulties were pointed out and remedied before construction was started, insured cheaper, more durable and more efficient exhaust systems and general ventilating system work, than relying on the knowledge of ventilating engineers, tinsmiths, ventilating men, contractors or proprietors, which years of experience by this division. has shown that they did not possess.

The health of the people exposed to dust, fumes or gases and vapors in factories was thus better protected, and the accident hazard greatly reduced by this procedure.

Investigation of Special Trades

The investigation relating to health, operative and fire hazards. in the woodworking industry, involving the removal of removal of refuse from woodworking machines, was completed during the year. An illustrated pamphlet containing seventy-three halftones, was prepared as a result of these labors. The pamphlet deals with such features of ventilating engineering as pipe sizes and construction, air velocities necessary to carry the refuse of various grades, sizes and weights, refuse collection, and offices necessary for the special woodworking.

An investigation relating to the Economic Value of Maintaining Clean Windows and Lighting Fixtures was undertaken and completed, it being the intention to show manufacturers, factory proprietors and owners of buildings what loss is entailed by unclean windows and lighting fixture accessories. This material in pamphlet form is also in the hands of the State Printer.

It

will be illustrated with half-tones from photographs taken by the Division of Industrial Hygiene.

The investigation relating to Unsafe Practices, undertaken during the previous year, with a view toward determining to what extent employees were injured through the so-called medium "carelessness," ignorance as to the proper manipulation of machines, failure to understand orders, through falling, slipping, fooling, through over-crowded machinery, etc., was continued through the latter part of the year. The scope of the investigation is so great, that before an intensive survey can be made, considerable time must naturally elapse. It is intended to illustrate the bulletin with numerous half-tones of tools and conditions found.

Investigation of Occupational Diseases

Occupational diseases required to be reported to the Department of Labor in accordance with Section 206, Article 7, of the Labor Law, were in all cases, when reported, investigated by physicians attached to the Division, and physical examinations made of the persons reported to be ill. The reports often involved the necessity of requiring certain orders to be issued to prevent recurrence of such maladies.

Data relating to claims for compensation cases relating to occupational diseases according to Sections 39 and 41, Article 3, of the Labor Law were referred to the Division and reviewed. An inspection of the premises was made at the process of work where the person having the disease worked, with a view toward recommending any changes in process or handling of material which would prevent recurrence.

Numerous physical examinations of workers engaged in the process involving the use of solder were conducted in New York City and other cities of the State. In connection with this, the medical inspectors who made the investigation interviewed a number of physicians connected with the plants inspected and others in the same city who might be consulted by persons suffering from lead poisoning. Blanks on which to report cases, furnished by the Department were left with these physicians with the request to report to the Department any cases of industrial poisoning which might be brought to their attention, as required by law.

Miscellaneous Technical Work

During the past year there were referred to the Division 318 matters of investigation. These referred to requests for technical evidence to be used in prosecution work, for photometric measurements to be conducted, photographs to be taken, investigations to be made relating to sterilization and other matters.

Those matters relating to cases of prosecution, necessitated the conducting of physical examinations of persons affected by orders issued that required legal means to enforce, also the making of chemical analyses; microscopical tests of the quantity of dust

present in the air of factories was found necessary in many instances.

Photometric measurements involving the use of foot candle meters and illuminometers to determine the intensity of light on working planes were requested of the department to be made. in factories and mercantile establishments, which were carried out and reported upon by the Division.

Photographic work occupied a portion of the time listed under Technical Research Work. The reproduction of working conditions, guards and devices, has not only proven of inestimable value to our inspection force, but to the outside public as well. What has been accomplished can readily be copied by others and is quick to impress itself on the memory and become of use when it can be shown in this manner.

Our list of photographs of guards, devices, exhaust systems, types of hoods, unsafe tools, unsafe way of performing work, has been added to with the object of having as complete a set of pictures relating to our law and code as it is possible to collect, which can be used at meetings held in the supervising districts of the State, as a means of instruction.

Many of the photos taken are reproduced in half-tones in the two bulletins prepared by the Division during the past year as a means to illustrate various devices and to elucidate the written text.

Lantern slides of the greater number of photographs were made with a view toward showing the pictures by means of our balopticon to the inspectors connected with the various supervising inspection districts as a means of instruction in the principles of ventilating engineering and other branches of the Labor Law.

The application of firms for the aproval of sterilizing processes to be used on bedding, pillows, mattresses, in accordance with section 389-n, Article 25-B, of the Labor Law, wherein either steam under pressure, streaming steam or formaldehyde gas and sulphurous oxide were to be used in connection with vaporous steam or water, were referred to the Division for approval or disapproval. In each case, a visit was made to the premises to observe the device or the size and character of the room in which the disinfection was to be carried on where formaldehyde gas was to be used, with a view toward inspecting the contrivance to be used for the generation of the gas and its capacity for generating a sufficient amount, on which depended the approval or disapproval of the method of sterilization.

The efficiency and faithfulness of the field and office force of the Division in carefully handling the many intricate problems, particularly in reference to ventilating engineering, is evident.

I wish to commend the force of the Division for their assistance and effort, and feel each member has endeavored to give to the Department the best work that is within him.

Recapitulation of Work Performed in Detail

Bulletins prepared to date..

Bulletins prepared and issued during the year.

New plans for ventilating systems examined

Subsequent plans for ventilating systems examined.

Photographs taken in the field....

Chemical analyses made in connection with investigations.

Physical examinations

10

2

559

317

167

42

568

28

2,444

870

2,750

503

1

JOHN H. VOGT,

Director, Division of Industrial Hygiene.

DIVISION OF ENGINEERING

In accordance with your request we are submitting the following report on the activities and contemplated work of this Division, as of June 30, 1922:

From the above tabulation it will be noted that from June 30, 1921, to June 30, 1922, the Engineering Division received applications for the examination of 438 plans representing an estimated cost of $11,145,998 for the construction and alterations of factory buildings outside of Greater New York. During this period the Division examined 523 plans, approved 383, disapproved 144 and referred 37 to the Industrial Board for variations. The fact that the number of plans examined exceeds those received is due to plans awaiting examination from the previous fiscal year, and also a complete revision of plans necessitating a re-examination, but not considered a new application.

This Division made a thorough examination of three buildings which were reported to the Department as structurally unsafe; in each case a complete report being submitted, supplemented by sketches. In one of these buildings the owners and tenants each employed a consulting engineer, who confirmed the findings of this Department.

This Division has collaborated with the Division of Industrial Codes and the various Code Committees in promulgating Industrial Codes.

Due to the geographic location of the various communities throughout the State, the major portion of the work is carried on through correspondence, and unlike any other building department, each applicant is provided with a detailed letter describing the plans as submitted, and specific criticisms of all points involved; where deemed necessary, sketches are made to amplify the letter in order to facilitate the disposition of applications.

The recent enactment of chapter 405 of the Laws of 1922 Public Safety-necessitating the submission of plans of "Places of Public Assembly" to this Division for examination, not only for fire hazards, sanitation, etc., but as to structural design, will, without doubt, increase the work 100 per cent. The definition of a "Place of Public Assembly " is so broad that it would be difficult to enumerate the classes of buildings that will be subject